Is 421 Sumner Ave rent stabilized?
421 Sumner Ave is a registered NYC rent-stabilized building in Bed-Stuy (East), Brooklyn (11216). It has about 6 apartments, built in 1873.
Also written as 421 Sumner Avenue — or 421 Sumner Ave, Brooklyn, NY 11216.
How this building compares
With about 6 apartments it sits near the middle of the 816 rent-stabilized buildings this site tracks in Bed-Stuy (East), where the median building has 7. It went up in 1873, 58 years before the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 13 open violations here, about 2.2 per apartment — above the 0.6 per apartment median for tracked buildings in the neighborhood. Of the 195 violations on record at the address, 46 are class C — HPD's immediately hazardous grade, and 3 of them are still open. HPD issued 9 new violations at the address in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Bed-Stuy (East) |
| ZIP | 11216 |
| Year built | 1873 |
| Apartments | 6 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3016640004 |
Owner & management
| Owner | Markus S LLC 350 Northern Blvd Suite 310 · Great Neck, NY 11021 |
| Managing agent | Liran Homayounfar |
Building conditions
| HPD violations | 13 open / 195 total · 9 in last 12 mo |
| HPD complaints | 0 open / 242 total |
| HPD registration last filed | December 31, 2025 |
Full building report — $9
Frequently asked questions
Is 421 Sumner Ave rent stabilized?
421 Sumner Ave in Bed-Stuy (East), 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 421 Sumner Ave?
421 Sumner Ave (BBL 3016640004) has about 6 residential apartments and was built in 1873, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.