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    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

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        <cik>0002124681</cik>
        <entityName>BREP Opus Co-Investment Partners L.P.</entityName>
        <issuerAddress>
            <street1>345 PARK AVENUE</street1>
            <city>NEW YORK</city>
            <stateOrCountry>NY</stateOrCountry>
            <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
            <zipCode>10154</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>212-583-5000</issuerPhoneNumber>
        <jurisdictionOfInc>ONTARIO, CANADA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2026</value>
        </yearOfInc>
    </primaryIssuer>

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                <firstName>n/a</firstName>
                <lastName>Blackstone Real Estate Associates Europe VII L.P.</lastName>
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                <street1>345 Park Avenue</street1>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10154</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
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            <relationshipClarification>General Partner of the Issuer (the &quot;GP&quot;)</relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>n/a</firstName>
                <lastName>Blackstone Real Estate Associates Europe (Delaware) VII L.L.C.</lastName>
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                <stateOrCountry>NY</stateOrCountry>
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            <relatedPersonRelationshipList>
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                <lastName>Harper</lastName>
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                <middleName>F.</middleName>
                <lastName>Marone, Jr.</lastName>
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        <relatedPersonInfo>
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                <firstName>Nadeem</firstName>
                <lastName>Meghji</lastName>
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            <relatedPersonName>
                <firstName>Craig</firstName>
                <lastName>Miller</lastName>
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        <relatedPersonInfo>
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                <firstName>Michael</firstName>
                <lastName>Nagelberg</lastName>
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                <firstName>Nentcho</firstName>
                <lastName>Nentchev</lastName>
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        <relatedPersonInfo>
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                <firstName>Jacob</firstName>
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            <relatedPersonName>
                <firstName>Eric</firstName>
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            <relatedPersonName>
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    <offeringData>
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                <is40Act>false</is40Act>
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        <offeringSalesAmounts>
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            <totalAmountSold>0</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
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        <signatureBlock>
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            <signature>
                <issuerName>BREP Opus Co-Investment Partners L.P.</issuerName>
                <signatureName>/s/ Madeleine Russo</signatureName>
                <nameOfSigner>Madeleine Russo</nameOfSigner>
                <signatureTitle>Managing Director and Chief Compliance Officer</signatureTitle>
                <signatureDate>2026-04-14</signatureDate>
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</edgarSubmission>
