Is 603 Isham St rent stabilized?
603 Isham St is a registered NYC rent-stabilized building in Inwood, Manhattan (10034). It has about 41 apartments, built in 1930.
Also written as 603 Isham Street — or 603 Isham St, Manhattan, NY 10034.
How this building compares
With about 41 apartments it sits near the middle of the 293 rent-stabilized buildings this site tracks in Inwood, where the median building has 42. Its 1930 construction date sits close to the 1925 median for stabilized buildings tracked in the neighborhood. HPD lists 3 open violations here, about one for every 14 apartments — below the 0.5 per apartment median for tracked buildings in the neighborhood. Of the 24 violations on record at the address, 4 are class C — HPD's immediately hazardous grade. Tenants have filed 94 HPD complaints at the address, 19 of them in the last twelve months.
Building details
| Borough | Manhattan |
| Neighborhood | Inwood |
| ZIP | 10034 |
| Year built | 1930 |
| Apartments | 41 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 1022430008 |
Owner & management
| Owner | ALEF REALTY MANAGEMENT CO LLC 4500 BWAY #1C · NY, NY 10040 |
| Managing agent | JOSEPH GORODISCHER |
Building conditions
| HPD violations | 3 open / 24 total |
| HPD complaints | 0 open / 94 total |
| HPD registration last filed | June 27, 2025 |