476 recorded events, 1966–2026, from 18 city data systems. The city's paper trail here is mostly 120 ACRIS deeds & mortgages, 82 311 service requests, 74 DOB permits.
Full record, year by year Support this site
The city's published records show little recorded distress here in the last three years. Less recorded distress than 67% of 25-99-unit residential buildings citywide. The citywide median for 25-99-unit residential buildings is 23.6 penalty points per 10 units; this building carries 8.7. In ZIP 10024, 70% of residential buildings hold an A and 2% grade D or F. How grades work
Among 17,252 25-99-unit residential buildings citywide · left is less recorded distress, right is more
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.
No heat or hot-water complaints in the last three years.
1 bedbug-infested unit(s) reported in filings over the last three years.
$16,280 in enforcement penalties imposed (ECB/OATH) in the last three years.
16 service requests in the last three years. Most common: Illegal Parking (7) · General Construction/Plumbing (4) · Noise (2) · Mobile Food Vendor (1) · Street Condition (1) · Sidewalk Condition (1).
$2,063,325 in permitted construction work filed since 2016 (22 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.
| Yes | Built before 1974 (1916) |
| Yes | Six or more residential units (26) |
| No | 421-a / J-51 tax benefit on the current tax roll |
2 of 3 signals present. This is the classic profile of a rent-stabilized building (pre-1974, 6+ units) — many units in such buildings remain stabilized. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | 601 WEST END TENANTS CORP |
| Head officer | SHAWN TAY |
| Managing agent | CORNERSTONE MANAGEMENT SYSTEMS INC |
| Last registered | 2025-08-11 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $10,130,000 | $4,558,500 |
| 2026 | $10,317,000 | $4,642,650 |
| 2027 | $9,689,000 | $4,360,050 |
The city's market estimate has fallen 4% between tax years 2025 and 2027.
Tax exemptions on the roll: SENIOR CITIZEN HOMEOWNER
For property tax, the Department of Finance values this co-op as if it were a rental building. Its 2022 estimate: gross income $1,747,836 a year ($36.91 per sq ft), operating expenses $611,814 ($12.92 per sq ft), net operating income $1,136,022. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
| Energy grade (LL33) | B — ENERGY STAR score 77/100 (2022 disclosure cycle) |
| Heating fuel | NATURALGAS |
| Facade (Local Law 11) | SAFE (cycle 9) |
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.
1 street-flooding or sewer-backup complaints at this address since 2016 (0 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.
| Subway | 86 St — 1 · 750 ft straight-line (about a 4-minute walk) · station accessibility: none 96 St — 1 2 3 · 0.2 mi straight-line (about a 6-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: Broadway / W 89 St — M104 · 500 ft |
| Citi Bike | W 87 St & West End Ave · 600 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 084 Lillian Weber. 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.
601 West End Avenue
| Heat or hot water | Heat or hot water |
| Apartment maintenance | Apartment maintenance |
| Bed bugs | Bed bugs |
| Residential pests | Residential pests |
| Rats or mice | Rats or mice |
| Anything else | Anything else |
16 311 service requests from this address in the last three years.
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.
Managed by CORNERSTONE MGMT SYSTEMS INC — 113 buildings, 1,524 units. Grades across the portfolio: A94 · B12 · C6. See the whole portfolio
showing 60 of 113 buildings
Most recent mortgage recorded against this lot: $599,336 on 2023-06-30 (lender: National Consumer Cooperative Bank). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2023-11-28 | RPTT&RET $1,868,334 — from DURKIN, NANETTE to NEWMAN, RICHARD SAMUEL; VARGAS, MARIA GABRIELA | $1,868,334 | |
| 2023-11-15 | RPTT&RET $1,725,000 — from BOWDEN, JEFFREY N to FALK, RUBEN; HERNANDEZ, STEPHANIE | $1,725,000 | |
| 2023-11-15 | Sold for $1,868,334 | $1,868,334 | $71,859 |
| 2023-10-20 | Sold for $1,725,000 | $1,725,000 | $66,346 |
| 2023-06-30 | Mortgage $599,336 — from 601 WEST END TENANTS CORP; 601 WEST END TENANTS' CORP. to NATIONAL CONSUMER COOPERATIVE BANK | $599,336 | |
| 2023-06-30 | AL&R $599,336 — from 601 WEST END TENANTS' CORP.; 601 WEST END TENANTS CORP to NATIONAL CONSUMER COOPERATIVE BANK | $599,336 | |
| 2023-06-30 | AL&R $599,336 — from NATIONAL CONSUMER COOPERATIVE BANK to NATIONAL COOPERATIVE BANK, N.A. | $599,336 | |
| 2022-09-27 | RPTT&RET $2,100,000 — from WOLFMAN, SETH; TIMEN, SARA to LUGERNER, SINDY; LUGERNER, STEVEN | $2,100,000 | |
| 2022-09-20 | Sold for $2,100,000 | $2,100,000 | $80,769 |
| 2022-06-14 | RPTT&RET $1,500,000 — from DURKIN, MARK to DURKIN, NANETTE G | $1,500,000 | |
| 2022-05-19 | RPTT&RET $1,955,000 — from LESLIE, RICHARD E; LESLIE, ELEANOR C to HANSON, ERICA K; SHULTZ, CHRISTIAN J | $1,955,000 | |
| 2022-05-10 | Sold for $1,500,000 | $1,500,000 | $57,692 |
| 2022-05-10 | Sold for $1,955,000 | $1,955,000 | $75,192 |
| 2022-03-01 | RPTT&RET $2,200,000 — from BIGGAR, LINDSAY LOUISE; BAIRD, MATTHEW C to REITER, HAYLEY M | $2,200,000 | |
| 2022-02-14 | Sold for $2,200,000 | $2,200,000 | $84,615 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 9 | 0 | 2 | 3 | 1 | 15 |
| 2018 | 4 | 2 | 2 | 0 | 5 | 13 |
| 2019 | 8 | 3 | 36 | 10 | 3 | 60 |
| 2020 | 5 | 5 | 11 | 0 | 3 | 24 |
| 2021 | 3 | 0 | 14 | 2 | 4 | 23 |
| 2022 | 9 | 2 | 4 | 8 | 4 | 27 |
| 2023 | 0 | 2 | 2 | 9 | 3 | 16 |
| 2024 | 8 | 0 | 7 | 0 | 4 | 19 |
| 2025 | 14 | 7 | 10 | 3 | 3 | 37 |
| 2026 | 1 | 3 | 2 | 0 | 4 | 10 |
Every one of the 476 recorded events, 1966–2026, is laid out year by year in the full report (print-ready).
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