Is 312 To 324 E 21st St rent stabilized?
312 To 324 E 21st St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 54 apartments, built in 1940.
Also written as 312 To 324 East 21st Street — or 312 To 324 E 21st St, Brooklyn, NY 11226.
How this building compares
With about 54 apartments it is larger than 71% of the 564 rent-stabilized buildings this site tracks in Flatbush. Its 1940 construction date sits close to the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 69 open violations here, about 1.3 per apartment — above the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 475 violations on record at the address, 103 are class C — HPD's immediately hazardous grade, and 28 of them are still open. HPD issued 51 new violations at the address in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1940 |
| Apartments | 54 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3051240012 |
Owner & management
| Owner | 312 East 21 Holding LLC 261 Lenox Road OFFICE · Brooklyn, NY 11226 |
| Managing agent | Yida Stern |
Building conditions
| HPD violations | 69 open / 475 total · 51 in last 12 mo |
| HPD complaints | 7 open / 718 total |
| HPD registration last filed | August 27, 2025 |
Full building report — $9
Frequently asked questions
Is 312 To 324 E 21st St rent stabilized?
312 To 324 E 21st St in Flatbush, 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 312 To 324 E 21st St?
312 To 324 E 21st St (BBL 3051240012) has about 54 residential apartments and was built in 1940, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.