<SEC-DOCUMENT>0001213900-20-025139.txt : 20200903
<SEC-HEADER>0001213900-20-025139.hdr.sgml : 20200903
<ACCEPTANCE-DATETIME>20200903070334
ACCESSION NUMBER:		0001213900-20-025139
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20200903
DATE AS OF CHANGE:		20200903
EFFECTIVENESS DATE:		20200903

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SG BLOCKS, INC.
		CENTRAL INDEX KEY:			0001023994
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-LUMBER & OTHER CONSTRUCTION MATERIALS [5030]
		IRS NUMBER:				954463937
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-248571
		FILM NUMBER:		201158228

	BUSINESS ADDRESS:	
		STREET 1:		195 MONTAGUE STREET, 14TH FLOOR
		CITY:			BROOKLYN
		STATE:			NY
		ZIP:			11201
		BUSINESS PHONE:		(646) 240-4235

	MAIL ADDRESS:	
		STREET 1:		195 MONTAGUE STREET, 14TH FLOOR
		CITY:			BROOKLYN
		STATE:			NY
		ZIP:			11201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CDSI HOLDINGS INC
		DATE OF NAME CHANGE:	19990114

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PC411 INC
		DATE OF NAME CHANGE:	19961001
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>ea126085-s8_sgblocksinc.htm
<DESCRIPTION>REGISTRATION STATEMENT
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>As filed with the Securities and Exchange
Commission on September 3, 2020</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>FORM S-8</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>REGISTRATION STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>UNDER</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>THE SECURITIES ACT OF 1933</B></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SG BLOCKS, INC.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>(Exact name of registrant as specified
in its charter)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 49%; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Delaware</B></FONT></TD>
    <TD STYLE="padding-bottom: 1.5pt; width: 2%">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; width: 49%; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>95-4463937</B></FONT></TD></TR>
<TR>
    <TD STYLE="text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>(State or other jurisdiction<BR>
of incorporation or organization)</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>(I.R.S. Employer<BR>
Identification Number)</I></FONT></TD></TR>
</TABLE>
<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SG Blocks, Inc.<BR>
17 State Street, 19th Floor</b></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>New York, New
York 10004</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(646) 240-4235</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B></B></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>(Address, including ZIP code, and telephone
number, including</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>area code, of registrant&rsquo;s principal
executive office)</I></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SG BLOCKS, INC. STOCK INCENTIVE PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>(Full title of the Plan)</I></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Paul M. Galvin<BR>
SG Blocks, Inc.<BR>
17 State Street, 19th Floor</b></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>New York, New
York 10004</B></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>(646) 240-4235</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>(Name, address and telephone number of
agent for service of process)</I></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B><I>WITH COPIES TO:</I></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Leslie Marlow, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Hank Gracin, Esq</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Patrick J. Egan, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Gracin &amp; Marlow, LLP</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>The Chrysler Building</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>405 Lexington Avenue, 26<SUP>th</SUP></B>&nbsp;<B>Floor</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>New York, New York 10174</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>(212) 907-6457</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><I>(Name, address and telephone number)</I></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth
company. See the definitions of &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer&rdquo; &ldquo;smaller reporting
company&rdquo; and &ldquo;emerging growth company&rdquo; in Rule 12b-2 of the Exchange Act.:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 60%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Large accelerated filer &nbsp;&nbsp;&#9744;</FONT></TD>
    <TD STYLE="width: 40%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Accelerated filer &nbsp;&#9744;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Non-accelerated filer &nbsp;&nbsp;&#9746;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Smaller reporting company &nbsp;&#9746;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Emerging growth company &nbsp;&#9744;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If an emerging growth company, indicate by check mark if the
registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards
provided pursuant to Section 13(a) of the Exchange Act.&nbsp;&nbsp;&#9744;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>CALCULATION OF REGISTRATION FEE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font-weight: bold; border-bottom: Black 1.5pt solid">Title&nbsp;of Securities to be Registered</TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; text-align: center; border-bottom: Black 1.5pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount&nbsp;to&nbsp;be<BR>
Registered&nbsp;(1)(2)</B></P></TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; text-align: center; border-bottom: Black 1.5pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed<BR>
Maximum</B></P> <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Offering<BR>
Price<BR>
Per&nbsp;Share(3)</B></P></TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; text-align: center; border-bottom: Black 1.5pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed<BR>
Maximum<BR>
Aggregate<BR>
Offering<BR>
Price(3)</B></P></TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; text-align: center; border-bottom: Black 1.5pt solid"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount&nbsp;of<BR>
Registration<BR>
Fee(4)</B></P></TD><TD STYLE="white-space: nowrap; padding-bottom: 1.5pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 52%">&nbsp;</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 11%">&nbsp;</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 9%; text-align: right">&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 9%; text-align: right">&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 9%; text-align: right">&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-indent: -0.125in; padding-left: 0.125in; text-align: left">Common Stock, par value $0.01 per share, to be issued under the SG Blocks, Inc. Stock Incentive Plan</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: center">1,000,000 shares</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">2.15</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">2,150,000</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right"><P STYLE="margin: 0; font: 10pt Times New Roman, Times, Serif">279.07</P></TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify; width: 24px"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(1)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The securities to be registered include options and other rights to acquire the common stock of SG Blocks, Inc. (the &ldquo;Registrant&rdquo;).</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(2)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;), this registration statement also covers any additional securities that may be offered or issued in connection with any stock split, stock dividend or similar transaction.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(3)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Calculated pursuant to Rule 457(c) and 457(h) of the Securities
Act solely for purposes of calculating the registration fee. The price for the shares under the plan is based upon the average
of the high and low sale prices of the Registrant&rsquo;s common stock reported on the NASDAQ Capital Market on August 28, 2020.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify; text-indent: 2.25pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(4)</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Calculated under Section 6(b) of the Securities Act as .00012980 of the proposed maximum aggregate offering price.</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>EXPLANATORY NOTE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">SG Blocks, Inc. (the
&ldquo;Registrant&rdquo; or the &ldquo;Company&rdquo;) filed with the Securities and Exchange Commission (the &ldquo;Commission&rdquo;)
its Registration Statement on Form S-8&nbsp;(Registration No. 333-223950) on March 27, 2018 (the &ldquo;March 2018 Registration
Statement&rdquo;) pursuant to and in accordance with the requirements of General Instruction E to Form S-8 for the purpose of registering
under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;), 75,000 shares (1,500,000 shares on a pre-split
basis) of common stock, par value $0.01 per share (the &ldquo;Common Stock&rdquo;), to be offered and sold under the Registrant&rsquo;s
Stock Incentive Plan, as it may be amended (hereinafter referred to as the &ldquo;Plan&rdquo;).&nbsp;&nbsp;Pursuant to General
Instruction E to Form S-8, the contents of the 2018 Registration Statement are incorporated into this Registration Statement by
reference.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="background-color: white">The
Registrant also filed with the Commission its Registration Statement on Form S-8&nbsp;(Registration No. 333-233352) on June 5,
2018 (the &ldquo;June 2018 Registration Statement&rdquo;) pursuant to and in accordance with the requirements of General Instruction
E to Form S-8 for the purpose of registering under the Securities Act an additional 50,000 shares (1,000,000 shares on a pre-split
basis) of Common Stock to be offered and sold under the Plan.&nbsp;&nbsp;These additional 50,000 shares of Common Stock were added
pursuant to the adoption of Amendment No. 1 to the Plan. &nbsp;Pursuant to General Instruction E to Form S-8, the contents of the
2019 Registration Statement are incorporated into this Registration Statement by reference.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Registrant is filing
this Registration Statement on Form S-8 (the &ldquo;Registration Statement&rdquo;) to register an additional 1,000,000 shares of
Common Stock that were added to the Plan by a vote of the Registrant&rsquo;s stockholders at the Registrant&rsquo;s 2020 Annual
Meeting of Stockholders that was held on July 30, 2020 (the &ldquo;2020 Annual Meeting&rdquo;), whereby the stockholders approved
Amendment No. 2 to the Plan. &nbsp;A<FONT STYLE="background-color: white">mendment No. 2 to the Plan increased the number of shares
of Common Stock with respect to which awards may be granted under the Plan to an aggregate of 1,125,000 shares of Common Stock.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>


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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>PART I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>INFORMATION REQUIRED IN THE SECTION 10(a)
PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item&nbsp;1. Plan Information*</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item&nbsp;2. Registrant Information and Employee Plan Annual
Information*</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">*The information specified
in Item 1 and Item 2 of Part I of this Registration Statement on Form S-8 is omitted from this filing in accordance with the provisions
of Rule 428 under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;), and the introductory note to Part
I of Form S-8. The documents containing the information specified in Part I will be delivered to the participants in the Plan as
required by Rule 428. Such documents and the documents incorporated by reference in this Registration Statement pursuant to Item
3 of Part II of this Registration Statement, taken together, constitute a prospectus that meets the requirements of Section 10(a)
of the Securities Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART II</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 3. Incorporation of Documents by Reference</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Securities and
Exchange Commission (the &ldquo;Commission&rdquo;) allows us to &ldquo;incorporate by reference&rdquo; certain information that
we will file with it which means that we can disclose important information to you by referring you to those documents instead
of having to repeat the information in this prospectus. The later information that we file with the SEC will automatically update
and supersede this information. We incorporate by reference the documents listed below and we also incorporate by reference into
this prospectus all documents (other than current reports furnished under Item 2.02 or Item 7.01 of Form 8-K and exhibits filed
on such form that are related to such items) that are filed by us with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of
the Exchange Act (Commission File No. 001-38037)) after the date of this prospectus but prior to the filing of a post-effective
amendment which indicates that all securities offered hereby have been sold or which deregisters all securities remaining unsold.
These documents include periodic reports, such as Annual Reports on Form 10-K, Quarterly Reports on Form&nbsp;10-Q and Current
Reports on Form 8-K, as well as proxy statements.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The following documents
are incorporated by reference into this document:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.5in">&nbsp;</TD>
    <TD STYLE="width: 0.25in; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our Annual Report on <A HREF="http://www.sec.gov/ix?doc=/Archives/edgar/data/1023994/000121390020008003/sgbx-20191231.htm">Form 10-K</A> for the year ended December 31, 2019 (File No. 001-38037) filed with the SEC on&nbsp;March 30, 2020&nbsp;and Annual Report on <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020009211/f10k2019a1_sgblocksinc.htm">Form 10-K/A</A> (Amendment No. 1) for the year ended December 31, 2019 (File No. 001-38037) filed with the SEC on&nbsp;April 15, 2020;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Our Quarterly Report on <A HREF="http://www.sec.gov/ix?doc=/Archives/edgar/data/1023994/000121390020012295/sgbx-20200331.htm">Form 10-Q</A> for the quarter ended March
31, 2020 (File No. 001-38037) filed with the SEC on May 14, 2020;</P>


</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our Quarterly Report on <A HREF="http://www.sec.gov/ix?doc=/Archives/edgar/data/1023994/000121390020021903/sgbx-20200630.htm">Form 10-Q</A> for the quarter ended June 30, 2020 (File No. 001-38037) filed with the SEC on&nbsp;August 13, 2020;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our Current Reports
    on Form 8-K (File No. 001-38037) filed with the SEC&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020000052/f8k010220_sgblocks.htm">January
    2, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020001196/f8k011520_sgblocksinc.htm">January
    16, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020001584/f8k012120_sgblocksinc.htm">January
    23, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020002638/f8k020420_sgblocksinc.htm">February
    5, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020002724/f8k020420_sgblocksinc.htm">February
    6, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020004569/f8k022120_sgblocks.htm">February
    24, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020008555/ea120371-8k_sgblocks.htm">April
    3, 2020</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020009208/ea120678-8k_sgblocksinc.htm">April
    15</A>,&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020009394/ea120761-8k_sgblocksinc.htm">April
    17</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020010253/ea121053-8k_sgblocks.htm">April 28,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020010944/ea121379-8k_sgblocksinc.htm">May 5,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020011651/ea121510-8k_sgblocksinc.htm">May 11,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020012604/ea121964-8k_sgblocksinc.htm">May 15,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020013260/ea122247-8k_sgblocks.htm">May 22,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020014008/ea122641-8k_sgblocks.htm">June 3,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020014651/ea122880-8k_sgblocks.htm">June 11,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020015255/ea123192-8k_sgblock.htm">June 18,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020015447/ea123301-8k_sgblocks.htm">June 22,
    2020</A>, <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020016021/ea123542-8k_sgblocksinc.htm">June 29
    2020</A> and <A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020019273/ea124778-8k_sgblock.htm">July 30,
    2020</A>; and</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The description of the Registrant&rsquo;s common stock contained in the Registrant&rsquo;s Registration Statement on&nbsp;<A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390017002571/f8a12b0317_sgblocksinc.htm">Form&nbsp;8-A</A>&nbsp;filed under the Exchange Act, as filed on March 20, 2017 (File No. 001-38037), including any amendment or report filed for the purpose of updating such description.</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">We will provide to
each person, including any beneficial owner, to whom a prospectus is delivered, a copy of any or all of the reports or documents
that we incorporate by reference in this prospectus contained in the registration statement (except exhibits to the documents that
are not specifically incorporated by reference) at no cost to you, by writing or calling us at the following address and telephone
number:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SG Blocks, Inc.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>17 State Street, 19th Floor</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>New York, New York 10004</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(646) 240-4235</B></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Information about us
is available at the Registrant&rsquo;s website at&nbsp;<I>www.sgblocks.com.</I>&nbsp;Except for the specific incorporated reports
and documents listed above, no information available on or through the Registrant&rsquo;s website shall be deemed to be incorporated
in this prospectus or the registration statement of which it forms a part. Any statement contained in this registration statement
or in a document incorporated or deemed to be incorporated by reference in this registration statement shall be deemed to be modified
or superseded for purposes of this registration statement to the extent that a statement contained in this registration statement
or in any other subsequently filed document which also is or is deemed to be incorporated by reference in this registration statement
modifies or supersedes that statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this registration statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 4. Description of Securities</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5. Interests of Named Experts and Counsel</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 6. Indemnification of Directors and Officers</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Subsection (a) of Section
145 of the General Corporation Law of the State of Delaware (the &ldquo;DGCL&rdquo;) empowers a corporation to indemnify any person
who was or is a party or who is threatened to be made a party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason
of the fact that the person is or was a director, officer, employee or agent of the corporation, or is or was serving at the request
of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other
enterprise, against expenses (including attorneys&rsquo; fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by the person in connection with such action, suit or proceeding if the person acted in good faith and in a manner the
person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe the person&rsquo;s conduct was unlawful.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Subsection (b) of Section
145 empowers a corporation to indemnify any person who was or is a party or is threatened to be made a party to any threatened,
pending or completed action or suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact
that the person acted in any of the capacities set forth above, against expenses (including attorneys&rsquo; fees) actually and
reasonably incurred by the person in connection with the defense or settlement of such action or suit if the person acted in good
faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, except that
no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have been adjudged to be
liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was
brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the
case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court
shall deem proper.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Section 145 further
provides that to the extent a director or officer of a corporation has been successful on the merits or otherwise in the defense
of any action, suit or proceeding referred to in subsections (a) and (b) of Section 145, or in defense of any claim, issue or matter
therein, such person shall be indemnified against expenses (including attorneys&rsquo; fees) actually and reasonably incurred by
such person in connection therewith; that indemnification provided for by Section 145 shall not be deemed exclusive of any other
rights to which the indemnified party may be entitled; and the indemnification provided for by Section 145 shall, unless otherwise
provided when authorized or ratified, continue as to a person who has ceased to be a director, officer, employee or agent and shall
inure to the benefit of such person&rsquo;s heirs, executors and administrators. Section 145 also empowers the corporation to purchase
and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation, or is or
was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise against any liability asserted against such person and incurred by such person in any such capacity,
or arising out of his status as such, whether or not the corporation would have the power to indemnify such person against such
liabilities under Section 145.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Section 102(b)(7) of
the DGCL provides that a corporation&rsquo;s certificate of incorporation may contain a provision eliminating or limiting the personal
liability of a director to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director,
provided that such provision shall not eliminate or limit the liability of a director (i) for any breach of the director&rsquo;s
duty of loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional
misconduct or a knowing violation of law, (iii) under Section 174 of the DGCL, or (iv) for any transaction from which the director
derived an improper personal benefit.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Registrant&rsquo;s
certificate of incorporation and the Registrant&rsquo;s bylaws provide that we will indemnify the Registrant&rsquo;s directors
and officers to the fullest extent permitted by the DGCL, which prohibits the Registrant&rsquo;s certificate of incorporation from
limiting the liability of the Registrant&rsquo;s directors for the following:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR>
    <TD STYLE="width: 0.5in; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 0.25in; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">any breach of the director&rsquo;s duty of loyalty to us or the Registrant&rsquo;s stockholders;</FONT></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law;</FONT></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">unlawful payment of dividends or unlawful stock repurchases or redemptions; or</FONT></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD>
    <TD STYLE="vertical-align: top; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">any transaction from which the director derived an improper benefit.</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Registrant&rsquo;s
amended and restated certificate of incorporation, as amended, provides for indemnification of the Registrant&rsquo;s directors
and executive officers to the maximum extent permitted by the DGCL, and the Registrant&rsquo;s amended and restated bylaws provide
for indemnification of the Registrant&rsquo;s directors and executive officers to the maximum extent permitted by the DGCL.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">We have entered into
indemnification agreements with each of the Registrant&rsquo;s current directors. These agreements will require us to indemnify
these individuals to the fullest extent permitted under Delaware law against liabilities that may arise by reason of their service
to us and to advance expenses incurred as a result of any proceeding against them as to which they could be indemnified. We also
intend to enter into indemnification agreements with the Registrant&rsquo;s future directors and executive officers.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Item 7. Exemption from Registration
Claimed</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Item 8. Exhibits</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1.5pt solid; padding-bottom: 1.5pt; width: 9%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Exhibit&nbsp;No.</B></FONT></TD>
    <TD STYLE="padding-bottom: 1.5pt; width: 1%">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1.5pt solid; padding-bottom: 1.5pt; width: 90%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Description&nbsp;of&nbsp;Document</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">3.1</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390016014815/f8k101515ex3i_sgblocksinc.htm">Amended
        and Restated Certificate of Incorporation of SG Blocks, Inc. dated June 30, 2016 (incorporated herein by reference to Exhibit
        3.1 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and Exchange Commission on July 7,
        2016).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">3.2</P></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390017001852/f8k022817ex3i_sgblocksinc.htm">Certificate
        of Amendment to Amended and Restated Certificate of Incorporation of SG Blocks, Inc. dated February 24, 2017 (incorporated
        herein by reference to Exhibit 3.1 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and
        Exchange Commission on February 28, 2017).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">3.3</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390019010112/f8k060519ex3-1_sgblocks.htm">Certificate
        of Amendment to Amended and Restated Certificate of Incorporation of SG Blocks, Inc. dated June 5, 2019 (incorporated herein
        by reference to Exhibit 3.1 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and Exchange
        Commission on June 5, 2019).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center">3.4</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020002638/f8k020420ex3-1_sgblocks.htm" STYLE="-sec-extract: exhibit">Certificate of Amendment to the Amended and Restated Certificate of Incorporation, as amended, of SG Blocks,&nbsp;Inc.&nbsp;&nbsp;dated February 4, 2020 (incorporated herein by reference to Exhibit 4.1 to the Current Report on Form 8-K as filed by SG Blocks,&nbsp;Inc. with the Securities and Exchange Commission on February 5, 2020 (File No. 001-38037)).</A></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">3.5</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390017001664/f10k2016ex3iv_sgblocks.htm">Amended and Restated By-laws of SG Blocks, Inc. (incorporated herein by reference to Exhibit 3.4 to the Annual Report on Form 10-K as filed by SG Blocks, Inc. with the Securities and Exchange Commission on February 21, 2017).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.1</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390017001060/def14c0217a_sgblocks.htm">SG Blocks, Inc. Stock Incentive Plan (incorporated herein by reference to the Information Statement on Schedule 14C as filed by SG Blocks, Inc. with the Securities and Exchange Commission on February 8, 2017).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.2</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390018007248/f8k060118ex10-1_sgblock.htm">Amendment No. 1 to SG Blocks, Inc. Stock Incentive Plan (incorporated herein by reference to Exhibit 10.1 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and Exchange Commission on June 5, 2018).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.3</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390020015822/ea123451-def14a_sgblocks.htm">Amendment No. 2 to the SG Blocks, Inc. Stock Incentive Plan (incorporated herein by reference to Appendix A to the Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on June 25, 2020).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.4</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390016017851/f8k102616ex10i_sgblocksinc.htm">Form of SG Blocks, Inc. Incentive Stock Option Agreement (incorporated herein by reference to Exhibit 10.1 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and Exchange Commission on November 1, 2016).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">4.5</P></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390016017851/f8k102616ex10ii_sgblocksinc.htm">Form of SG Blocks, Inc. Non-Qualified Stock Option Agreement (incorporated herein by reference to Exhibit 10.2 to the Current Report on Form 8-K as filed by SG Blocks, Inc. with the Securities and Exchange Commission on November 1, 2016).</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.6</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify"><A HREF="http://www.sec.gov/Archives/edgar/data/1023994/000121390019015826/ex102_4.htm"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Form of Restricted Stock Units Agreement (incorporated herein by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q as filed by SG Blocks, Inc. with the Securities and Exchange Commission on August 14, 2019).</FONT></A></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">5.1*</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="ea126085ex5-1_sgblocksinc.htm">Opinion of Gracin &amp; Marlow, LLP regarding legality of shares</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">23.1*</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="ea126085ex23-1_sgblocksinc.htm">Consent of Whitley Penn LLP, Independent Registered Public Accounting Firm</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">23.2*</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><A HREF="ea126085ex5-1_sgblocksinc.htm">Consent of Gracin &amp; Marlow, LLP (included in Exhibit 5.1)</A></P></TD></TR>
<TR STYLE="vertical-align: top; background-color: White">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">24.1*</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#poa_001">Power of Attorney (included as part of the signature page to this Registration Statement and incorporated herein by reference)</A> </FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.25in; text-align: left">*</TD><TD STYLE="text-align: justify">Filed herewith</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Item 9. Undertakings</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The undersigned Registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">1. To file, during any period in which
offers or sales are being made, a post-effective amendment to this registration statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">i. To include any prospectus
required by Section 10(a)(3) of the Securities Act of 1933, as amended;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">ii. To reflect in the
prospectus any facts or events arising after the effective date of this registration statement (or the most recent post-effective
amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in this
Registration Statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">iii. To include any
material information with respect to the plan of distribution not previously disclosed in this registration statement or any material
change to such information in the registration statement; provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed
by the Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference
in this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">2. That, for the purpose of determining
any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">3. To remove from registration by means
of a post-effective amendment any of the securities being registered that remain unsold at the termination of the offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">4. That, for purposes of determining any
liability under the Securities Act of 1933, each filing of the Registrant&rsquo;s annual report pursuant to section 13(a) or section
15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan&rsquo;s annual report pursuant
to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall
be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at
that time shall be deemed to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">5. Insofar as indemnification for liabilities
arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant, the
Registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other
than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection
with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against
public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to the requirements of the Securities Act of 1933,
the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8
and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in&nbsp;the
City of New York, State of New York, on the 3<SUP>rd</SUP> day of September, 2020.</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>SG BLOCKS, INC.</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 60%">&nbsp;</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 35%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Paul M. Galvin</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Paul M. Galvin</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</FONT></TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Chairman of the Board and<BR>
Chief Executive Officer</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Principal Executive Officer)</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B><A NAME="poa_001"></A>POWER OF ATTORNEY AND SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Each of the undersigned,
whose signature appears below, hereby constitutes and appoints Paul M. Galvin as his true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign
any or all amendments to this Registration Statement, whether pre-effective or post-effective, and to file the same with all exhibits
thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact
and agent, or his substitute, full power and authority to do and perform each and every act and thing necessary or appropriate
to be done with respect to this Registration Statement or any amendments hereto in the premises, as fully to all intents and purposes
as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute
may lawfully do or cause to be done by virtue thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to the requirements
of the Securities Act of 1933, as amended, this registration statement on Form S-8 has been signed by the following persons in
the capacities and on the dates indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="vertical-align: bottom; width: 32%; border-bottom: black 1.5pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Signature</B></FONT></TD>
    <TD STYLE="vertical-align: top; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 48%; border-bottom: black 1.5pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Title</B></FONT></TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1.5pt solid; vertical-align: bottom; width: 18%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Date</B></FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Paul M. Galvin </FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Chairman of the Board and Chief Executive Officer</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">September 3, 2020
    &nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Paul M. Galvin&nbsp;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Principal Executive Officer)</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1.5pt solid; vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Gerald Sheeran </FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Acting Chief Financial Officer</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">September 3, 2020
    &nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Gerald Sheeran&nbsp;</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Principal Financial Officer and </FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Principal Accounting Officer)</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="border-bottom: Black 1.5pt solid; vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Yaniv Blumenfeld</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">September
    3, 2020</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Yaniv Blumenfeld&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="border-bottom: Black 1.5pt solid; vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Maggie Coleman</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">September
    3, 2020</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Maggie Coleman&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR>
    <TD STYLE="border-bottom: Black 1.5pt solid; vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Christopher Melton</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">September
    3, 2020</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: bottom"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Christopher Melton&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; text-align: center">6</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; margin-left: 0in; text-indent: 0in; text-align: justify"></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; margin-left: 0in; text-indent: 0in; text-align: justify"></P>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>ea126085ex5-1_sgblocksinc.htm
<DESCRIPTION>OPINION OF GRACIN & MARLOW, LLP REGARDING LEGALITY OF SHARES
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Exhibit 5.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><IMG SRC="ex5-1_001.jpg" ALT=""></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">The Chrysler Building</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">405 Lexington Avenue, 26<SUP>th</SUP>&nbsp;Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">New York, New York 10174</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Telephone: (212) 907-6457</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Facsimile: (212) 208-4657</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
September 3, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Board of Directors</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">SG Blocks, Inc.<BR>
195 Montague Street, 14th Floor<BR>
Brooklyn, New York 11201</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Re:</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><U>Registration
Statement on Form S-8</U></FONT></TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We refer to the Registration Statement
on Form S-8 (the &ldquo;<U>Registration Statement</U>&rdquo;) filed on the date hereof by SG Blocks, Inc., a Delaware corporation
(the &ldquo;<U>Company</U>&rdquo;), with the Securities and Exchange Commission with respect to the registration of up to an aggregate
of 1,000,000 shares of the Company&rsquo;s common stock, par value $0.01 per share (the &ldquo;<U>Shares</U>&rdquo;), to be issued
in connection with the Company&rsquo;s Stock Incentive Plan,  as amended and restated on January 30, 2017, as further amended
by Amendment No. 1 thereto, dated June 1, 2018, and Amendment No. 2 thereto, dated July 30, 2020 (collectively, the &ldquo;<U>Plan</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">In connection with rendering this opinion,
we have examined or are familiar with the charter documents of the Company, the Plan, the corporate proceedings with respect to
the authorization of the Registration Statement and the Plan, and such other certificates, instruments and documents as we have
considered necessary or appropriate for purposes of this opinion. In such examination, we have assumed the genuineness of all signatures,
the authenticity of all documents submitted to us as originals, conformity to the original documents of all documents submitted
to us as copies and the authenticity of the originals of such latter documents.&nbsp;As to any facts material to our opinion, we
have, when relevant facts were not independently established, relied upon the Registration Statement and the aforesaid records,
certificates and documents. We have made such examination as we have deemed necessary for the purpose of this opinion.&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Based upon such examination, it is our
opinion, that, the Shares have been duly and validly authorized and when issued against receipt of the consideration therefore
in accordance with the provisions of the Plan and the Registration Statement, will be validly issued, fully paid and non-assessable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We are members of the bar of the State
of New York, and do not express any opinion herein concerning any law other than the Delaware General Corporation Law and applicable
reported judicial decisions. This opinion letter has been prepared for use in connection with the Registration Statement. We assume
no obligations to advise you of any change in the foregoing subsequent to the delivery of this opinion letter.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We hereby consent to the filing of this
opinion letter as Exhibit 5.1 to the Registration Statement. In giving such consent, we do not thereby admit that we are in the
category of persons whose consent is required under Section&nbsp;7 of the Securities Act, and the rules and regulations of the
Securities and Exchange Commission promulgated thereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; width: 60%">&nbsp;</TD>
    <TD STYLE="width: 40%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Very truly yours,</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Gracin &amp; Marlow, LLP</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: left"><B>&nbsp;</B></P>

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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>ea126085ex23-1_sgblocksinc.htm
<DESCRIPTION>CONSENT OF WHITLEY PENN LLP, INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Exhibit 23.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Consent of Independent Registered Public
Accounting Firm</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We consent to the incorporation by reference
in this registration statement on Form S-8 of SG Blocks, Inc. of our report dated March 30, 2020, related to our audits of the
consolidated balance sheets of SG Blocks, Inc. and subsidiaries as of December 31, 2019 and 2018, and the related consolidated
statements of operations, changes in stockholders&rsquo; equity, and cash flows for the years then ended, which report appears
in the Company&rsquo;s Annual Report on Form 10-K for the year ended December 31, 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">/s/ Whitley Penn LLP</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dallas, Texas</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">September 3, 2020</P>

</BODY>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ex5-1_001.jpg
<DESCRIPTION>GRAPHIC
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
