521 Isham Street
A 6-story building with 60 apartments, built in 1930, in Manhattan, NY 10034.
Addresses on the lot: 521 to 529 Isham Street.
HPD records as of October 28, 2026
521 Isham Street has 20 open HPD violations, 7 of them immediately hazardous. Tenants made 57 complaints to HPD in the past year, 13 about heat or hot water. It is registered to Isham 521, LLC. 60 apartments were registered as rent stabilized in 2023.
Does 521 Isham Street have open violations?
Yes: 20 open violations as of October 28, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 7 |
| B, hazardous | 30 days | 8 |
| A, non-hazardous | About 90 days | 5 |
It has an open class C violation, as 70% of NYC buildings with 50 to 99 apartments do. More on buildings by size
Of the violations HPD wrote here in the past year, 44 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 57 complaints to HPD in the 12 months to October 28, 2026, 13 of them about heat or hot water. Complaints reach HPD through 311; an inspector may then write a violation.
Among NYC buildings with 50 to 99 apartments, 77% had at least one complaint to HPD in the past year, and 65% had one about heat or hot water.
Every complaint on HPD Online ↗ · Noise complaints go to 311, not HPD
Who owns 521 Isham Street?
521 Isham Street is registered with HPD to Isham 521, LLC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
The registration on HPD Online ↗ · The owner’s other buildings, on Who Owns What ↗ · Deeds and mortgages (ACRIS) ↗ · How to find who owns a building
Housing court and evictions
None in the past five years. HPD’s record has 1 older case, the latest from 2019.
City marshals carried out 2 evictions here in the five years to May 30, 2026.
For comparison, 39% of residential buildings in 10034 had a housing court case in the past five years.
Is 521 Isham Street rent stabilized?
60 apartments were registered as rent stabilized in 2023, the same as in 2018. That’s 60 of the building’s 60 apartments. Whether one apartment is stabilized is in its rent history, which the tenant can ask the state for.
How to check if an apartment is rent stabilized
Scores out of ten, from today’s records
Score this buildingThe address check reads the latest complaints and violations and scores the building, the landlord, the noise on the block and the walk to the subway. On a StreetEasy listing, the Chrome extension adds light for the floor and value for the rent.
Buildings nearby
- 272 Sherman Avenue60 apartments, built 1928
- 541 Isham Street46 apartments, built 1926
- 530 Isham Street25 apartments, built 1920
- 276 Sherman Avenue52 apartments, built 1926
- 181 Vermilyea Avenue40 apartments, built 1916
- 549 Isham Street50 apartments, built 1922
HPD violations, complaints, registrations and housing court cases as of October 28, 2026; evictions and rent-stabilized counts as of May 30, 2026; size and age from the city’s PLUTO. All from NYC Open Data. Public records, not legal advice. Tax lot 1-02228-0045.