Is 321 Flatbush Ave rent stabilized?
321 Flatbush Ave is a registered NYC rent-stabilized building in Prospect Heights, Brooklyn (11217). It has about 8 apartments, built in 1903.
Also written as 321 Flatbush Avenue — or 321 Flatbush Ave, Brooklyn, NY 11217.
How this building compares
With about 8 apartments it sits near the middle of the 262 rent-stabilized buildings this site tracks in Prospect Heights, where the median building has 10. Its 1903 construction date sits close to the 1915 median for stabilized buildings tracked in the neighborhood. HPD lists no open violations at this address — one of 47 such buildings among the 263 this site tracks in the neighborhood.
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Building details
| Borough | Brooklyn |
| Neighborhood | Prospect Heights |
| ZIP | 11217 |
| Year built | 1903 |
| Apartments | 8 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3011570010 |
Owner & management
| Owner | 150 SIXTH AVE CORP 321 FLATBUSH AVE · BROOKLYN, NY 11217 |
| Managing agent | 150 SIXTH AVE REALTY LLC |
Building conditions
| HPD violations | 0 open / 1 total |
| HPD registration last filed | September 11, 2025 |
Full building report — $9
📄 Get the full building report — $9. How this building's violation record compares citywide, who owns it and what else they own, and a pre-filled DHCR rent-history request. One-time, no account needed. The report also states plainly what the data cannot tell you. Get the report for 321 Flatbush Ave →
Other rent-stabilized buildings in Prospect Heights
762 Classon Ave516 Sterling Pl500 Sterling Pl495 Sterling Pl20a 7th Ave20 7th Ave129 6th Ave319 Flatbush Ave136 Prospect Pl134 Prospect Pl126 Prospect Pl111 Prospect Pl