231 East 21st Street

A 6-story building with 24 apartments, built in 1920, in Manhattan, NY 10010.

Addresses on the lot: 229 to 231 East 21st Street.

HPD records as of October 26, 2026

5open HPD violations1 immediately hazardous

0complaints to HPD, past yearnone about heat

4rent-stabilized apartmentsregistered in 2023

Nonehousing court cases in 5 years2 older

231 East 21st Street has 5 open HPD violations, 1 of them immediately hazardous. Tenants made no complaints to HPD in the past year. It is registered to 21st Owner LLC. 4 apartments were registered as rent stabilized in 2023.

Does 231 East 21st Street have open violations?

Yes: 5 open violations as of October 26, 2026. HPD sorts them by how soon the owner must fix them:

Class	Deadline	Open
C, immediately hazardous	24 hours for most	1
B, hazardous	30 days	2
A, non-hazardous	About 90 days	2

It has an open class C violation, as 66% of NYC buildings with 20 to 49 apartments do. More on buildings by size

Of the violations HPD wrote here in the past year, 1 has been closed.

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 26, 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 231 East 21st Street?

231 East 21st Street is registered with HPD to 21st Owner LLC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.

1 other building is 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

None in the past five years. HPD’s record has 2 older cases, the latest from 2009.

City marshals carried out no evictions here in the five years to May 30, 2026.

For comparison, 11% of residential buildings in 10010 had a housing court case in the past five years.

Is 231 East 21st Street rent stabilized?

4 apartments were registered as rent stabilized in 2023, down from 5 in 2018. That’s 4 of the building’s 24 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 building

The 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

HPD violations, complaints, registrations and housing court cases as of October 26, 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 1-00902-0020.