88 open HPD violations at this address, 24 of them class C — the immediately hazardous tier — on a 48-unit elevator apartment building in Brooklyn.
4520 12th Avenue is a 48-unit building in Brooklyn, New York City (BBL 3056150048). This building is associated with Boro Park Portfolio Owner LLC. Brix tracks 88 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.
Built in 1940, this elevator apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.
Tenants have filed 665 HPD complaints about this building over the last five years, most often about heat/hot water.
What tenants have called the city about here over the last five years:
The most recent complaint on this building was filed October 1, 2026.
Conditions cited on open violations at this address:
The building last changed hands on March 31, 2022, according to recorded deeds.
Brix score: 0/100. View the Building Report on Brix.
See every NYC building owned by Boro Park Portfolio Owner LLC on the landlord portfolio page.
Part of Borough Park — see violations, complaints, and landlord activity across the whole neighborhood.
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Unit B6 at 4520 12th Avenue has 29 open violations.
Unit C3 at 4520 12th Avenue has 19 open violations.
Unit D7 at 4520 12th Avenue has 6 open violations.
Unit F3 at 4520 12th Avenue has 3 open violations.
Unit A5 at 4520 12th Avenue has 3 open violations.
Unit E1 at 4520 12th Avenue has 3 open violations.
Unit C6 at 4520 12th Avenue has 2 open violations.
Unit A3 at 4520 12th Avenue has 2 open violations.
Unit F8 at 4520 12th Avenue has 1 open violation.
Unit C2 at 4520 12th Avenue has 1 open violation.
Unit 8E at 4520 12th Avenue has no open violations (5 past violations).
Unit B2 at 4520 12th Avenue has no open violations (4 past violations).
Unit B7 at 4520 12th Avenue has no open violations (33 past violations).
Unit B8 at 4520 12th Avenue has no open violations (8 past violations).
Unit D1 at 4520 12th Avenue has no open violations (1 past violation).
Unit D2 at 4520 12th Avenue has no open violations (1 past violation).
Unit E5 at 4520 12th Avenue has no open violations (25 past violations).
Unit E8 at 4520 12th Avenue has no open violations (3 past violations).
Unit F5 at 4520 12th Avenue has no open violations (1 past violation).
Unit F6 at 4520 12th Avenue has no open violations (4 past violations).
Unit F7 at 4520 12th Avenue has no open violations (7 past violations).
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