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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
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 veZM9ThLgq3zqM0FsEu/rQ==

<SEC-DOCUMENT>0001479294-09-000001.txt : 20091224
<SEC-HEADER>0001479294-09-000001.hdr.sgml : 20091224
<ACCEPTANCE-DATETIME>20091224113150
ACCESSION NUMBER:		0001479294-09-000001
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20091224
DATE AS OF CHANGE:		20091224
EFFECTIVENESS DATE:		20091224

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Boston Residential SG Co-Invest Fund Limited Partnership
		CENTRAL INDEX KEY:			0001479294
		IRS NUMBER:				800517715
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-137186
		FILM NUMBER:		091259899

	BUSINESS ADDRESS:	
		STREET 1:		C/O OTTENBERG & DUNKLESS LLP
		STREET 2:		101 ARCH STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-267-6026

	MAIL ADDRESS:	
		STREET 1:		200 NEWBURY STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001479294</cik>
        <entityName>Boston Residential SG Co-Invest Fund Limited Partnership</entityName>
        <issuerAddress>
            <street1>200 Newbury Street</street1>
            <city>BOSTON</city>
            <stateOrCountry>MA</stateOrCountry>
            <zipCode>02116</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>617-267-3500</issuerPhoneNumber>
        <jurisdictionOfInc>MASSACHUSETTS</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Kevin</firstName>
                <middleName>J</middleName>
                <lastName>Ahearn</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>200 Newbury Street</street1>
                <city>Boston</city>
                <stateOrCountry>MA</stateOrCountry>
                <zipCode>02116</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Manager of KA &amp; JS Realty Management Company LLC, the General Partner of the Issuer</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Residential</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>No Revenues</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-12-22</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>250000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>20000000</totalOfferingAmount>
            <totalAmountSold>1000000</totalAmountSold>
            <totalRemaining>19000000</totalRemaining>
            <clarificationOfResponse>The offering will seek to raise $20,000,000 but there is no minimum amount which must be raised.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>2</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>A portion of the proceeds of the offering could be used to pay mgmnt fees to the Issuer's general partner which could then be used as part of its working capital including payment of wages to such persons. It is not known if the proceeds will be so used.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Boston Residential SG Co-Invest Fund Limited Partnership</issuerName>
                <signatureName>Jonathan Schneider</signatureName>
                <nameOfSigner>Jonathan Schneider</nameOfSigner>
                <signatureTitle>Manager of KA &amp; JS Realty Management Company LLC</signatureTitle>
                <signatureDate>2009-12-24</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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