<SEC-DOCUMENT>0001193125-14-360448-index.html : 20141001
<SEC-HEADER>0001193125-14-360448.hdr.sgml : 20141001
<ACCEPTANCE-DATETIME>20141001130807
ACCESSION NUMBER:		0001193125-14-360448
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20140731
FILED AS OF DATE:		20141001
DATE AS OF CHANGE:		20141001
EFFECTIVENESS DATE:		20141001

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BlackRock Build America Bond Trust
		CENTRAL INDEX KEY:			0001493683
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0731

	FILING VALUES:
		FORM TYPE:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22426
		FILM NUMBER:		141132332

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>d747454dncsr.htm
<DESCRIPTION>BLACKROCK BUILD AMERICA BOND TRUST
<TEXT>
Document 1 - file: d747454dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d747454dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d747454dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d747454dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d747454dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXYPOL
<SEQUENCE>4
<FILENAME>d747454dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY
<TEXT>
Document 4 - file: d747454dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g747444photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g747444photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g747444sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g747444sig_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g747454g53c37.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g747454g53c37.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g747454g65b16.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g747454g65b16.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g747454g98u13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g747454g98u13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g747454leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g747454leaf.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g747456g28g28.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g747456g28g28.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g747456g85d60.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g747456g85d60.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g747456g91t63.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g747456g91t63.jpg

</DOCUMENT>
</SEC-DOCUMENT>