421 3 Street, Brooklyn

City inspectors were last at this 4-unit walk-up apartment building on April 30, 2026, and the resulting violation remains open.

421 3 Street is a 4-unit building in Brooklyn, New York City (BBL 3009750047). This building is associated with 421 Third St Housing CORP. Brix tracks 4 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 1920, 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 May 9, 2017 for $1,450,000, according to recorded deeds.

Brix rating: Concerning (43/100). View the full report on Brix.

See every NYC building owned by 421 Third St Housing CORP on the landlord portfolio page.

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

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