City inspectors were last at this 4-unit walk-up apartment building on May 13, 2026, and the resulting violation remains open.
420 Jefferson Avenue is a 4-unit building in Brooklyn, New York City (BBL 3018360009). This building is associated with R Squared Developers LLC. Brix tracks 43 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.
Built in 1900, 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 30 HPD complaints about this building over the last five years, most often about water leak.
What tenants have called the city about here over the last five years:
The most recent complaint on this building was filed September 2, 2026.
Conditions cited on open violations at this address:
The building last changed hands on April 4, 2022 for $1,560,000, according to recorded deeds.
Brix score: 16/100. View the Building Report on Brix.
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Unit 4 at 420 Jefferson Avenue has 17 open violations.
Unit 3 at 420 Jefferson Avenue has 5 open violations.
Unit 1 at 420 Jefferson Avenue has 2 open violations.
Unit 2A at 420 Jefferson Avenue has no open violations (2 past violations).
Unit 2 at 420 Jefferson Avenue has no open violations (1 past violation).
Unit 1A at 420 Jefferson Avenue has no open violations (8 past violations).
Unit KITCHEN at 420 Jefferson Avenue has no open violations (1 past violation).
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