    <SEC-DOCUMENT>0001213900-21-025611-index.html : 20210511
    <SEC-HEADER>0001213900-21-025611.hdr.sgml : 20210511
    <ACCEPTANCE-DATETIME>20210511161709
    ACCESSION NUMBER:		0001213900-21-025611
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20210510
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Completion of Acquisition or Disposition of Assets
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210511
    DATE AS OF CHANGE:		20210511

    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:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38037
    		FILM NUMBER:		21911531

    	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>8-K
    <SEQUENCE>1
    <FILENAME>ea140611-8k_sgblock.htm
    <DESCRIPTION>CURRENT REPORT
    <TEXT>
    Document 1 - file: ea140611-8k_sgblock.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>ea140611ex10-1_sgblock.htm
    <DESCRIPTION>UNIMPROVED PROPERTY CONTRACT, DATED FEBRUARY 25, 2021, BY AND BETWEEN SG BLOCKS, INC. AND NORTHPORT HARBOR LLC
    <TEXT>
    Document 2 - file: ea140611ex10-1_sgblock.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>ea140611ex99-1_sgblock.htm
    <DESCRIPTION>PRESS RELEASE ISSUED BY SG BLOCKS, INC., DATED MAY 11, 2021
    <TEXT>
    Document 3 - file: ea140611ex99-1_sgblock.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>ex10-1_001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: ex10-1_001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>ex10-1_002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: ex10-1_002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>ex10-1_003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: ex10-1_003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>ex10-1_004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: ex10-1_004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>ex10-1_005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: ex10-1_005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>ex10-1_006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: ex10-1_006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>ex10-1_007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: ex10-1_007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>ex10-1_008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: ex10-1_008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>ex10-1_009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: ex10-1_009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>ex10-1_010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: ex10-1_010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>ex10-1_011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: ex10-1_011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>ex10-1_012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: ex10-1_012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>ex10-1_013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: ex10-1_013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>ex10-1_014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: ex10-1_014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>ex99-1_001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: ex99-1_001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>