Is 343 E 66th St rent stabilized?
343 E 66th St is a registered NYC rent-stabilized building in Upper East Side-Lenox Hill-Roosevelt Island, Manhattan (10065). It has about 27 apartments, built in 1910.
Also written as 343 East 66th Street — or 343 E 66th St, Manhattan, NY 10065.
How this building compares
With about 27 apartments it is larger than 63% of the 626 rent-stabilized buildings this site tracks in Upper East Side-Lenox Hill-Roosevelt Island. HPD lists 5 open violations here, about one for every 5 apartments — above the one for every 10 apartments median for tracked buildings in the neighborhood. Of the 114 violations on record at the address, 56 are class C — HPD's immediately hazardous grade, and 4 of them are still open. HPD issued 4 new violations at the address in the last twelve months. Tenants have filed 136 HPD complaints at the address, 17 of them in the last twelve months.
Building details
| Borough | Manhattan |
| Neighborhood | Upper East Side-Lenox Hill-Roosevelt Island |
| ZIP | 10065 |
| Year built | 1910 |
| Apartments | 27 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 1014410023 |
Owner & management
| Owner | WHITE MOUNTAIN REALTY CORP 1695 LEXINGTON AVENUE #STORE · NEW YORK, NY 10029 |
| Managing agent | DMB PROPERTIES INC |
Building conditions
| HPD violations | 5 open / 114 total · 4 in last 12 mo |
| HPD complaints | 0 open / 136 total |
| HPD registration last filed | August 31, 2025 |
Full building report — $9
Frequently asked questions
Is 343 E 66th St rent stabilized?
343 E 66th St in Upper East Side-Lenox Hill-Roosevelt Island, Manhattan is registered as rent stabilized in the New York State DHCR 2024 rent-stabilized building files, where its stabilization code is MULTIPLE DWELLING A. Registration is recorded for the building, not for each apartment in it, so an individual unit here can still have been deregulated — ask the landlord or DHCR for that apartment's rent history before relying on it.
How many apartments are at 343 E 66th St?
343 E 66th St (BBL 1014410023) has about 27 residential apartments and was built in 1910, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.
Other rent-stabilized buildings in Upper East Side-Lenox Hill-Roosevelt Island
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