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21 West End Avenue

Manhattan · Upper West Side-Lincoln Square, NY 10023

21 West End Avenue is a 616-apartment building in Upper West Side-Lincoln Square, built in 2013, managed by Dermot Realty Management Company. The City has 2 open housing-code violations on file for it, about 0.00 per apartment, well below the neighborhood norm for a building this size (HPD, as of 5 October 2026). Tenants filed 38 complaints with 311 in the past year, which the City closed in a median of 25 days (311, as of 5 October 2026). No tenant has reviewed it here yet. Everything above comes from the City's own records.

Managed by Dermot Realty Management Company

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Units
616
Year built
2013
Borough
Manhattan

This building’s record with the City

Complaints tenants filed with 311, and repairs a City inspector has asked for. Most repairs are routine maintenance. Both describe the building rather than the people in it, and often predate the current management.

5.0/5Little on recordScored from the records below against every building we cover. It is not a tenant rating. Nobody who lived here said this.

38tenant complaints

Filed with 311 in the past year · 6 the year before

Typically closed in 25 days · neighborhood median is 5

2open repairs

Outstanding with HPD

Immediately hazardous
0
Hazardous
2
Non-hazardous
0

What the open repairs are about

  • Stairs, floors and ceilings2
  • Leaks, damp or mould1

Housing Court

Tenants took this building's owner to Housing Court 1 time since October 2023.

A case is a filing, not a finding. Cases are settled, withdrawn and dismissed, and most end without a judgment either way.

Source: NYC 311 and Housing Preservation & Development. Look this building up · updated Oct 2026

The company that manages it, elsewhere

Dermot Realty Management Company manages 7 other buildings we cover, holding 2,103 apartments.

open violations
24open violations
immediately hazardous
4immediately hazardous
311 complaints
92311 complaints

in the past year

The company’s record across its other buildings, not this building’s. A company can run one well and another badly, and these figures often predate the current management. (HPD and 311, as of 28 September 2026.)

What tenants say

Nobody has written about 21 West End Avenue yet.

Does the heat hold in January? How long does the super take? Does management answer the phone, and were you charged what you expected? No public record answers any of that. Only someone who lived here can.

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