Winter heat drops repeat across units, while air quality reports surface in the immediate surroundings.
This 20-unit Flatbush pre-war carries three open Class B housing-code violations alongside a steady log of winter heating calls. While the building remains manageable in size, heating dips and air-quality complaints in the surrounding block face point to specific items to verify before signing. Three things to know:
Winter heat drops show up repeatedly on the building's log. 11 heat and hot water complaints sit on the building's three-year log, including multiple building-wide reports during the 2026 heating season. The calls point to recurring winter heat drops across different apartments rather than a single isolated outage.
Indoor air quality calls surface within three blocks. 10 indoor air quality complaints were logged within three blocks over the last 12 months. Airborne odors and chemical vapors often travel along shared building risers or vent stacks, making unit orientation relevant before signing.
Apartment noise complaints pop up regularly on the record. 15 residential noise complaints sit on the three-year log, dominated by loud music, parties, and banging. Sound transfer between apartments is a consistent theme in resident reports.
Quieter signals on this building and the blocks around it:
657 East 21st Street is a 20-unit building in Brooklyn, New York City (BBL 3052210086). This building is associated with 657 Properties LLC. Brix tracks 3 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.
Tenants have filed 153 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 May 4, 2026.
Conditions cited on open violations at this address:
The building last changed hands on February 6, 2014 for $2,200,000, according to recorded deeds.
Brix score: 47/100. View the Building Report on Brix.
See every NYC building owned by 657 Properties LLC on the landlord portfolio page.
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Unit A2 at 657 East 21st Street has 2 open violations.
Unit 30 at 657 East 21st Street has no violations, last sold in 2014 for $2.2M.
Unit 5A at 657 East 21st Street has no open violations (40 past violations).
Unit 4B at 657 East 21st Street has no open violations (10 past violations).
Unit 4D at 657 East 21st Street has no open violations (4 past violations).
Unit 3C at 657 East 21st Street has no open violations (9 past violations).
Unit 2B at 657 East 21st Street has no open violations (6 past violations).
Unit 2C at 657 East 21st Street has no open violations (7 past violations).
Unit 2D at 657 East 21st Street has no open violations (15 past violations).
Unit 1A at 657 East 21st Street has no open violations (2 past violations).
Unit A1 at 657 East 21st Street has no open violations (8 past violations).
Unit A3 at 657 East 21st Street has no open violations (1 past violation).
Unit A4 at 657 East 21st Street has no open violations (61 past violations).
Unit A5 at 657 East 21st Street has no open violations (15 past violations).
Unit B2 at 657 East 21st Street has no open violations (35 past violations).
Unit B3 at 657 East 21st Street has no open violations (16 past violations).
Unit B4 at 657 East 21st Street has no open violations (1 past violation).
Unit B5 at 657 East 21st Street has no open violations (16 past violations).
Unit C1 at 657 East 21st Street has no open violations (1 past violation).
Unit C2 at 657 East 21st Street has no open violations (27 past violations).
Unit C4 at 657 East 21st Street has no open violations (41 past violations).
Unit C5 at 657 East 21st Street has no open violations (37 past violations).
Unit D1 at 657 East 21st Street has no open violations (1 past violation).
Unit D2 at 657 East 21st Street has no open violations (16 past violations).
Unit D3 at 657 East 21st Street has no open violations (6 past violations).
Unit D4 at 657 East 21st Street has no open violations (2 past violations).
Unit D5 at 657 East 21st Street has no open violations (76 past violations).
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