340 21st Street, Brooklyn

    City inspectors were last at this 8-unit walk-up apartment building on May 1, 2026, and the resulting violation remains open.

    340 21st Street is a 8-unit building in Brooklyn, New York City (BBL 3008980032). This building is associated with 340 Realty LLC. Brix tracks 2 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

    Built in 1931, this walk-up apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

    Conditions cited on open violations at this address:

    The building last changed hands on August 25, 1999 for $200,000, according to recorded deeds.

    Brix score: 77/100. View the Building Report on Brix.

    See every NYC building owned by 340 Realty LLC on the landlord portfolio page.

    Part of Park Slope — see violations, complaints, and landlord activity across the whole neighborhood.

    Other buildings in 11215:

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    Apartments at 340 21st Street

    • Unit 8

      Unit 8 at 340 21st Street has no open violations (5 past violations).

    • Unit 6

      Unit 6 at 340 21st Street has no open violations (4 past violations).

    • Unit 3

      Unit 3 at 340 21st Street has no open violations (5 past violations).

    • Unit 2

      Unit 2 at 340 21st Street has no open violations (2 past violations).

    • Unit 1

      Unit 1 at 340 21st Street has no open violations (1 past violation).

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