Is 521 12th St rent stabilized?
521 12th St is a registered NYC rent-stabilized building in Park Slope, Brooklyn (11215). It has about 8 apartments, built in 1920.
Also written as 521 12th Street — or 521 12th St, Brooklyn, NY 11215.
How this building compares
HPD lists 41 open violations here, about 5.1 per apartment — above the one for every 4 apartments median for tracked buildings in Park Slope. Of the 56 violations on record at the address, 25 are class C — HPD's immediately hazardous grade, and 21 of them are still open. Tenants have filed 110 HPD complaints at the address, none of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Park Slope |
| ZIP | 11215 |
| Year built | 1920 |
| Apartments | 8 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3010970048 |
Owner & management
| Owner | 521 12TH STREET PROPERTIES LLC 182 GARFIELD PLACE #4 · BROOKLYN, NY 11215 |
| Managing agent | URBAN EQUITIES LLC |
Building conditions
| HPD violations | 41 open / 56 total |
| HPD complaints | 0 open / 110 total |
| HPD registration last filed | September 30, 2025 |
Full building report — $9
Frequently asked questions
Is 521 12th St rent stabilized?
521 12th St in Park Slope, Brooklyn is registered as rent stabilized in the New York State DHCR 2024 rent-stabilized building files, where its stabilization code is MULTIPLE DWELLING A. Registration is recorded for the building, not for each apartment in it, so an individual unit here can still have been deregulated — ask the landlord or DHCR for that apartment's rent history before relying on it.
How many apartments are at 521 12th St?
521 12th St (BBL 3010970048) has about 8 residential apartments and was built in 1920, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.