Is 511 9th St rent stabilized?
511 9th St is a registered NYC rent-stabilized building in Park Slope, Brooklyn (11215). It has about 6 apartments, built in 1911.
Also written as 511 9th Street — or 511 9th St, Brooklyn, NY 11215.
How this building compares
With about 6 apartments it is smaller than 75% of the 623 rent-stabilized buildings this site tracks in Park Slope. Its 1911 construction date sits close to the 1920 median for stabilized buildings tracked in the neighborhood. HPD lists 4 open violations here, about 0.7 per apartment — above the one for every 4 apartments median for tracked buildings in the neighborhood. Of the 71 violations on record at the address, 20 are class C — HPD's immediately hazardous grade. Tenants have filed 133 HPD complaints at the address, 4 of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Park Slope |
| ZIP | 11215 |
| Year built | 1911 |
| Apartments | 6 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3010910001 |
Owner & management
| Owner | 819 OWNER LLC 401 PARK AVENUE S #10TH F · New York, NY 10016 |
| Managing agent | APEX MANAGEMENT GROUP |
Building conditions
| HPD violations | 4 open / 71 total |
| HPD complaints | 0 open / 133 total |
| HPD registration last filed | August 14, 2025 |