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, and 1 of them is still open. 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 |
Full building report — $9
Frequently asked questions
Is 511 9th St rent stabilized?
511 9th 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 511 9th St?
511 9th St (BBL 3010910001) has about 6 residential apartments and was built in 1911, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.