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. Tenants have filed 242 HPD complaints at the address, 1 of them 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 |