Is 643 Southern Blvd rent stabilized?
643 Southern Blvd is a registered NYC rent-stabilized building in Longwood, the Bronx (10455). It has about 46 apartments, built in 1925.
Also written as 643 Southern Boulevard — or 643 Southern Blvd, the Bronx, NY 10455.
How this building compares
With about 46 apartments it is larger than 79% of the 264 rent-stabilized buildings this site tracks in Longwood. Its 1925 construction date sits close to the 1922 median for stabilized buildings tracked in the neighborhood. HPD lists 135 open violations here, about 2.9 per apartment — above the 0.7 per apartment median for tracked buildings in the neighborhood. Of the 1,591 violations on record at the address, 337 are class C — HPD's immediately hazardous grade. Tenants have filed 2,321 HPD complaints at the address, 63 of them in the last twelve months.
Building details
| Borough | the Bronx |
| Neighborhood | Longwood |
| ZIP | 10455 |
| Year built | 1925 |
| Apartments | 46 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 2026830094 |
Owner & management
| Owner | 643 SOUTHERN LLC 20 S BROADWAY #300 · Yonkers, NY 10701 |
| Managing agent | DAVID TENNENBAUM |
Building conditions
| HPD violations | 135 open / 1591 total · 77 in last 12 mo |
| HPD complaints | 9 open / 2321 total |
| HPD registration last filed | August 11, 2025 |