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101 West End Avenue

1,917Records
22City systems
0Open violations
2.8Penalty rate
Manhattan · ZIP 10023 · Neighborhood: Upper West Side-Lincoln Square
Open in the map

1,917 recorded events, 1978–2026, from 22 city data systems. The city's paper trail here is mostly 850 311 service requests, 221 DOB permits, 126 DOB job filings.

BoroughManhattan 10023
Built1999
Floors33
Res. units503
ClassD9
Owner (PLUTO)101 WEST END SPE II, LLC
BBL1011710062
BIN1085785

Full record, year by year   Support this site

GRADE A

The city's published records show little recorded distress here in the last three years. Less recorded distress than 55% of 100+-unit residential buildings citywide. The citywide median for 100+-unit residential buildings is 3.7 penalty points per 10 units; this building carries 2.8. In ZIP 10023, 77% of residential buildings hold an A and 3% grade D or F. How grades work

this building
A
B
C

Among 4,677 100+-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

No current HPD flags in the latest weekly snapshot: no open violations, no pending litigation, no active vacate orders, and not in the Alternative Enforcement Program.

Patterns

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

2
’24–25
2
’25–26

No bedbug-infested units reported in the last three years of filings.

$10,030 in enforcement penalties imposed (ECB/OATH) in the last three years.

What 311 hears from this address

332 service requests in the last three years. Most common: Illegal Parking (187) · Vendor Enforcement (33) · Noise (24) · PLUMBING (11) · Dirty Condition (7) · Street Condition (7).

Filed construction activity

$32,582,850 in permitted construction work filed since 2016 (39 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

NoBuilt before 1974 (1999)
YesSix or more residential units (503)
Yes421-a / J-51 tax benefit on the current tax roll

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

Registered owner(s)101 West End SPE II LLC
Head officerStephen Benjamin
Managing agentDermot Realty Management Company
Last registered2025-06-30

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

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$163,247,000 $73,461,150
2026$163,825,000 $73,721,250
2027$162,242,000 $73,008,900

The city's market estimate has fallen 1% between tax years 2025 and 2027.

Tax exemptions on the roll: 421A 20 YR PLUS 15 YR EXT

Building systems

Energy grade (LL33)C — ENERGY STAR score 65/100 (2022 disclosure cycle)
Heating fuelNO2FUEL
Facade (Local Law 11)SAFE (cycle 9)

Flood exposure

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

Not in a hurricane evacuation zone.

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

No street-flooding or sewer-backup complaints on record at this address.

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

Getting around

Subway66 St-Lincoln Center — 1 · 0.3 mi straight-line (about an 8-minute walk) · station accessibility: full
72 St — 1 2 3 · 0.4 mi straight-line (about an 11-minute walk) · station accessibility: full
BusNearest boarding stop: West End Av / W 64 St — M57 · 150 ft
Citi BikeW 64 St & Thelonious Monk Circle · 200 ft · station location as of 2026-09-23; live availability
School zones (2024–25 map)Elementary: The Riverside School for Makers and Artists. Confirm with the DOE's school search.

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

101 West End Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Anything elseAnything else

332 311 service requests from this address in the last three years — 2 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

BuildingBoroughUnitsGrade
21 West End Avenue MN616 A
101 West End Avenue MN503 A
29-22 Northern Boulevard QN467 A
95 East Houston Street MN361 A
29 Flatbush Avenue BK326 A
1263 East 14 Street BK302 A
760 3 Avenue MN284 A
546 West 44 Street MN280 A
236 Livingston Street BK271 A
23 Caton Place BK126 B
101 3 Avenue BK84 A
101 Avenue D MN78 A

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $20,640,000 on 2026-03-20 (lender: Walker & Dunlop, LLC). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2026-03-20Mortgage $20,640,000 — from 101 WEST END SPE II, LLC to WALKER & DUNLOP, LLC $20,640,000
2026-03-20Agreement $283,640,000 — from 101 WEST END SPE II, LLC to WALKER & DUNLOP, LLC $283,640,000
2023-08-08M&CON $263,000,000 — from 101 WEST END SPE II, LLC to FORETHOUGHT LIFE INSURANCE COMPANY $263,000,000
2018-10-23AL&R $260,000,000 — from 101 WEST END REIT LLC to LANDESBANK HESSEN-THURINGEN GIROZENTRALE $260,000,000
2018-10-23M&CON $260,000,000 — from 101 WEST END REIT LLC to LANDESBANK HESSEN-THURINGEN GIROZENTRALE $260,000,000
2018-09-27Deed $416,100,000 — from ARCHSTONE 101 WEST END AVENUE LP to 101 WEST END REIT, LLC $416,100,000
2018-09-13Sold for $416,100,000 $416,100,000 $827,237
2014-11-15RPTT $5,941,469 — from MACQUARIE NEW YORK PARKING 2, LLC; MACQUARIE NEW YORK PARKING 2, LLC to CITIZENS ICON HOLDINGS, LLC; CITIZENS ICON HOLDINGS, LLC $5,941,469
2014-11-15RPTT $5,941,469 — from MACQUARIE NEW YORK PARKING 2, LLC; MACQUARIE NEW YORK PARKING 2, LLC to CITIZENS ICON HOLDINGS, LLC; CITIZENS ICON HOLDINGS, LLC $5,941,469
2013-04-09Agreement $126,000,000 — from TISHMAN SPEYER ARCHSTONE-SMITH 101 WEST ; 101 WEST END, L.L.C.; ARCHSTONE 101 WEST END AVE to FANNIE MAE $126,000,000
2013-04-09Agreement $126,000,000 — from ARCHSTONE 101 WEST END AVENUE LP; TISHMAN SPEYER ARCHSTONE-SMITH 101 WEST ; ASN WEST END L to FANNIE MAE; THE BANK OF NEW YORK MELLON; THE BANK OF NEW YORK $126,000,000
2013-04-04RPTT $337,392,378 — from ARCHSTONE ENTERPRISE LP; ARCHSTONE ENTERPRISE GP LLC to ERP OPERATING LIMITED PARTNERSHIP; EQUITY RESIDENTIAL $337,392,378
2013-04-04RPTT $21,562,747 — from ARCHSTONE MULTIFAMILY PARALLEL GUARANTOR to ARCHSTONE ENTERPRISE GP LLC; ARCHSTONE ENTERPRISE LP $21,562,747
2013-04-04RPTT $21,562,747 — from ARCHSTONE MULTIFAMILY GUARANTOR LLC to ARCHSTONE MULTIFAMILY GUARANTOR LP; ARCHSTONE MULTIFAMILY GUARANTOR (GP) LLC $21,562,747
2013-04-04RPTT $1,686,962 — from ARCHSTONE MULTIFAMILY PRINCIPAL LP; ARCHSTONE MULTIFAMILY HOLDINGS I LLC to ARCHSTONE MULTIFAMILY GUARANTOR LLC $1,686,962

Ten-year activity

5002500
2017
2018
293
2019
2020
2021
2022
2023
2024
2025
2026
ConstructionEnforcementHousing & tenantsOwnership & moneyHealth & systems
Show as table
YearConstructionEnforcementHousing & tenantsOwnership & moneyHealth & systemsTotal
2017671802051
201818104091794
20196961147115293
202026266007119
20211883801579
2022164590786
202381186910214
2024131116408196
202510510127125
202632514565
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The full timeline

Construction 399Enforcement 255Housing & tenants 1,015Ownership & money 111Health & systems 137

Every one of the 1,917 recorded events, 1978–2026, is laid out year by year in the full report (print-ready).

Explore: ZIP 10023 · Landlord rankings · How grades work · The map · The Mice Map