21 WEST END AVENUE, Manhattan, NY, 10023 is a 622-unit rental building in Upper West Side, NYC. See every violation, 311 complaint, tenant review, and the LucidIQ score — before you sign a lease.
Rent stabilization and seismic safety
DHCR registration & tenant protections
Pros: Quiet, clean, nice, comfortable, a lot of grocery stores nearby, etc. Cons: management can be slow in terms of responding to emails
Pros: Great amenities, great finishings inside the units, and decent noise isolation between units. Cons: Neighborhood and the people it attracts are pretty boring. Floor to ceiling windows are not well insulated, espec…
Pros: Very friendly staff, great amenities Cons: The building's elevator sometimes get broken, but not quite common. For a building with few hundred units it could be slow. Location is far away from the subway.
Asking rent per bedroom type — switch tabs to see each with effective (concession-net) rent.
Portfolio-level grade reflects the landlord's buildings across NYC, weighted by unit count. Individual building grades may differ.
View full landlord profileACRIS deeds and regulatory filings
Manhattan · March 2026
Best & worst months to sign a lease
Potential savings: ~10% by timing your move to May.
Noise - Residential — Banging/Pounding
Noise - Residential — Banging/Pounding
HPD Class B Violation — § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR. IN THE FOYER LOCATED AT APT
HPD Class B Violation — § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 1st ROOM FROM EAST LO
HPD Class B Violation — § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 2nd ROOM FROM EAST LO
Noise - Residential — Banging/Pounding
Noise - Residential — Banging/Pounding
Noise - Residential — Banging/Pounding
Noise - Residential — Banging/Pounding
Noise - Residential — Loud Music/Party
Monthly counts over the last 7 years · all data sources
§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR. IN THE FOYER LOCATED AT APT 2706, 27th STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 1st ROOM FROM EAST LOCATED AT APT 2706, 27th STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE 2nd ROOM FROM EAST LOCATED AT APT 2706, 27th STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 1st ROOM FROM EAST AT SOUTH LOCATED AT APT 1624, 16th STORY, 1st APARTMENT FROM NORTH AT EAST , SECTION ''SOUTH''
§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CAULKING AROUND BATHTUB IN THE 1st BATHROOM FROM EAST LOCATED AT APT 1904, 19th STORY, 4th APARTMENT FROM EAST AT SOUTH
The Upper West Side around Lincoln Center is cultural Manhattan — the Met Opera, New York Philharmonic, and NYC Ballet are your neighbors. Riverside Park runs along the Hudson, and Columbus Avenue has evolved into one of the city's best dining corridors.