21 Claremont Avenue
A 10-story building with 47 apartments, built in 1910, in Manhattan, NY 10027.
HPD records as of October 28, 2026
21 Claremont Avenue has 14 open HPD violations. Tenants made no complaints to HPD in the past year. It is registered to TRUSTEES OF COLUMBIA UNIVERSITY.
Does 21 Claremont Avenue have open violations?
Yes: 14 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 | 0 |
| B, hazardous | 30 days | 9 |
| A, non-hazardous | About 90 days | 5 |
No class C violation is open. 66% of NYC buildings with 20 to 49 apartments have one. More on buildings by size
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made no complaints to HPD in the 12 months to October 28, 2026.
Among NYC buildings with 20 to 49 apartments, 69% had at least one complaint to HPD in the past year, and 53% had one about heat or hot water.
Every complaint on HPD Online ↗ · Noise complaints go to 311, not HPD
Who owns 21 Claremont Avenue?
21 Claremont Avenue is registered with HPD to TRUSTEES OF COLUMBIA UNIVERSITY. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
At least 50 other buildings are registered to the same company name, with 0 open violations between them.
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
HPD’s record shows no housing court cases over conditions or harassment at this building.
City marshals carried out no evictions here in the five years to May 30, 2026.
For comparison, 17% of residential buildings in 10027 had a housing court case in the past five years.
Is 21 Claremont Avenue rent stabilized?
No rent-stabilized apartments were registered here from 2018 to 2023. That doesn’t prove there are none: some owners don’t register them.
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
- 25 Claremont Avenue32 apartments, built 1910
- 450 Riverside Drive31 apartments, built 1909
- 15 Claremont Avenue27 apartments, built 1909
- 448 Riverside Drive25 apartments, built 1910
- 452 Riverside Drive54 apartments, built 1910
- 29 Claremont Avenue22 apartments, built 1910
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 1-01990-0010.