Building report

21 West End Avenue · Manhattan · BBL 1011717510 · generated 2026-10-20 · FREE Print / save PDF

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Where the penalty points come from

Open with the city right now

status snapshot refreshed weekly from HPD records

Patterns

14 heat or hot-water complaints in the last three years (winter 2023–24: 2 · winter 2024–25: 6 · winter 2025–26: 6). Repeated winter clusters suggest a chronic heating problem.

6 bedbug-infested unit(s) reported in filings over the last three years.

$8,750 in enforcement penalties imposed (ECB/OATH) in the last three years.

What 311 hears from this address

449 service requests in the last three years. Most common: Noise (206) · Illegal Parking (82) · UNSANITARY CONDITION (18) · School Maintenance (18) · FLOORING/STAIRS (8) · Dirty Condition (7).

Filed construction activity

$4,744 in permitted construction work filed since 2016 (3 filings with a declared cost) — a rough measure of how actively the owner maintains the building. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.

Rent-stabilization signals

2 of 3 signals present. Buildings receiving 421-a or J-51 benefits are generally required to register their units as rent-stabilized for the duration of the benefit. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).

Registered with HPD — the names behind the building

as filed by the owner in the building's HPD registration

What the city thinks it's worth

Tax exemptions on the roll: 421A 20 YR NO CAP

For property tax, the Department of Finance values this condo as if it were a rental building. Its 2023 estimate: gross income $36,383,663 a year ($53.23 per sq ft), operating expenses $7,641,731 ($11.18 per sq ft), net operating income $28,741,932. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.

Building systems

Restaurants in this building

Report to 311: Food poisoning · Food safety complaint

3 restaurants · 2 with mice evidence · See them on the Mice Map

5 Food Establishment complaints to 311 at this address in the last three years (most often: Rodents/Insects/Garbage, Handwashing, Kitchen/Food Prep Area), shared by 3 restaurants · complaints filed by the public; DOHMH investigates, outcomes aren't published.

Flood exposure

Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).

Hurricane evacuation zone 2 of 6 — zone 1 evacuates first.

Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.

1 street-flooding or sewer-backup complaints at this address since 2024 (1 in the last three years).

Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.

Getting around

Distances are straight-line, not walking routes. Transit locations from the MTA and Citi Bike, bike facilities from NYC DOT, school zones from the DOE's 2024–25 maps.

Report a problem to 311

21 West End Avenue Copy address

449 311 service requests from this address in the last three years — 6 of them about heat or hot water.

311 will ask for the address, the apartment if the problem is inside, and what's wrong. Contact details are optional for most complaints; food-poisoning reports can be anonymous. Complaints appear in the city's public 311 data, usually within a day or two, and then in the Live from 311 box on this page.

The landlord's report card

Managed by DERMOT REALTY MANAGEMENT COMPANY — 12 buildings, 3,698 units. Grades across the portfolio: A11 · B1. See the whole portfolio

Sales, deeds & mortgages

Ten-year activity

Show as table

Year	Construction	Enforcement	Housing & tenants	Ownership & money	Health & systems	Total
2017	2	1	33	0	0	36
2018	4	0	54	62	0	120
2019	0	3	35	0	0	38
2020	3	2	96	1	0	102
2021	1	1	147	0	0	149
2022	0	0	56	0	1	57
2023	0	3	104	1	2	110
2024	0	4	118	1	5	128
2025	0	1	115	0	6	122
2026	0	3	260	35	2	300

The last 12 months — 333 records

showing the 80 most recent

The full timeline

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