<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001449607</cik>
        <entityName>11447 SECOND STREET LLC</entityName>
        <issuerAddress>
            <street1>106 E. DOTY STREET, SUITE 210</street1>
            <city>MADISON</city>
            <stateOrCountry>WI</stateOrCountry>
            <zipCode>53703</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>608-886-7357</issuerPhoneNumber>
        <jurisdictionOfInc>ILLINOIS</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>11447 SECND STREET LLC</previousName>
        </edgarPreviousNameList>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2008</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jason</firstName>
                <lastName>Punzel</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>106 E. Doty Street, Suite 210</street1>
                <city>Madison</city>
                <stateOrCountry>WI</stateOrCountry>
                <zipCode>53703</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Indirect owner of issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Steve</firstName>
                <lastName>Thiry</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>106 E. Doty Street, Suite 210</street1>
                <city>Madison</city>
                <stateOrCountry>WI</stateOrCountry>
                <zipCode>53703</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Indirect owner of issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Brent</firstName>
                <lastName>Stuhley</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>106 E. Doty Street, Suite 210</street1>
                <city>Madison</city>
                <stateOrCountry>WI</stateOrCountry>
                <zipCode>53703</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Indirect owner of issuer.</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Real Estate</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$1,000,001 - $5,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>46</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>9999999997-08-045064</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2008-10-30</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isTenantInCommonType>true</isTenantInCommonType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>20000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Bert Hermelink II</recipientName>
                <recipientCRDNumber>243918</recipientCRDNumber>
                <associatedBDName>QA3 Financial Corp.</associatedBDName>
                <associatedBDCRDNumber>14754</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>23493 E. Phillips Place</street1>
                    <city>Aurora</city>
                    <stateOrCountry>CO</stateOrCountry>
                    <zipCode>80016</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CO</state>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1512500</totalOfferingAmount>
            <totalAmountSold>1512500</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>10</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>136125</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>196625</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>11447 SECOND STREET LLC</issuerName>
                <signatureName>Jason I. Punzel</signatureName>
                <nameOfSigner>11447 Second Street, LLC/Jason Punzel</nameOfSigner>
                <signatureTitle>Authorized representative</signatureTitle>
                <signatureDate>2009-11-23</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
