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
With about 8 apartments it sits near the middle of the 623 rent-stabilized buildings this site tracks in Park Slope, where the median building has 8. Its 1920 construction date sits close to the 1920 median for stabilized buildings tracked in the neighborhood. HPD lists 41 open violations here, about 5.1 per apartment — above the one for every 4 apartments median for tracked buildings in the neighborhood. Of the 56 violations on record at the address, 25 are class C — HPD's immediately hazardous grade. 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 |