Is 50 Diamond St rent stabilized?
50 Diamond St is a registered NYC rent-stabilized building in Greenpoint, Brooklyn (11222). It has about 6 apartments, built in 1931.
Also written as 50 Diamond Street — or 50 Diamond St, Brooklyn, NY 11222.
How this building compares
Its 1931 construction date sits close to the 1930 median for stabilized buildings tracked in Greenpoint. HPD lists no open violations at this address — one of 370 such buildings among the 904 this site tracks in the neighborhood. Tenants have filed 1 HPD complaint at the address, none of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Greenpoint |
| ZIP | 11222 |
| Year built | 1931 |
| Apartments | 6 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3026850062 |
Owner & management
| Owner | JOLANTA TROJANOWSKI 14 SOUTH 11TH ST · NEW HYDE PARK, NY 11040 |
| Managing agent | JOLANTA TROJANOWSKI |
Building conditions
| HPD complaints | 0 open / 1 total |
| HPD registration last filed | October 6, 2025 |
Full building report — $9
Frequently asked questions
Is 50 Diamond St rent stabilized?
50 Diamond St in Greenpoint, 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 50 Diamond St?
50 Diamond St (BBL 3026850062) has about 6 residential apartments and was built in 1931, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.