936 recorded events, 1900–2026, from 22 city data systems. The city's paper trail here is mostly 188 ACRIS deeds & mortgages, 172 311 service requests, 120 HPD housing violations.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 73% 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 16.1. In ZIP 10471, 90% of residential buildings hold an A and 2% grade D or F. How grades work
Among 4,677 100+-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 105 total — 18 class C (immediately hazardous), 61 class B, 26 class A. Oldest open since 1990-01-06. |
status snapshot refreshed weekly from HPD records
No heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
35 service requests in the last three years. Most common: WATER LEAK (6) · PAINT/PLASTER (5) · UNSANITARY CONDITION (4) · Illegal Parking (4) · Street Condition (2) · Street Light Condition (2).
$2,012,200 in permitted construction work filed since 2016 (19 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 (1961) |
| Yes | Six or more residential units (133) |
| 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) | WINDSOR APARTMENTS,INC |
| Head officer | DORON SCHACTER |
| Managing agent | ARGO REAL ESTATE LLC |
| Last registered | 2025-09-24 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $13,827,000 | $6,222,150 |
| 2026 | $14,155,000 | $6,369,750 |
| 2027 | $15,909,000 | $7,159,050 |
The city's market estimate has risen 15% between tax years 2025 and 2027.
Tax exemptions on the roll: COLD WAR VETERAN - DISABILITY · 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 $2,972,851 a year ($17.79 per sq ft), operating expenses $1,266,679 ($7.58 per sq ft), net operating income $1,706,173. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
| Energy grade (LL33) | C — ENERGY STAR score 60/100 (2022 disclosure cycle) |
| Heating fuel | NO2FUEL |
| Facade (Local Law 11) | SWARMP — "Safe With A Repair and Maintenance Program": known facade conditions that must be repaired (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 2017 (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 | Van Cortlandt Park-242 St — 1 · 0.7 mi straight-line (about a 19-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Henry Hudson Pkwy West / W 249 St — Bx7 Bx10 · 300 ft |
| Citi Bike | Riverdale Ave & W 254 St · 0.4 mi · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 081 Robert J. Christen Middle: Riverdale / Kingsbridge Academy (Middle School / High School 141). 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.
4901 Henry Hudson Pkwy W
| 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 |
35 311 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 ARGO REAL ESTATE, LLC — 140 buildings, 9,601 units. Grades across the portfolio: A126 · B14. See the whole portfolio
showing 60 of 140 buildings
Most recent mortgage recorded against this lot: $310,179 on 2022-05-25 (lender: Investors Bank), covering 2 lots — the amount covers all of them. Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2026-09-21 | Sold for $230,000 | $230,000 | $1,729 |
| 2026-07-14 | RPTT&RET $359,000 — from XIONG, HUIZHONG; TAN, WEI to NGUYEN, MONIQUE; NGUYEN, DAVID | $359,000 | |
| 2026-07-01 | Sold for $359,000 | $359,000 | $2,699 |
| 2026-04-23 | RPTT&RET $243,000 — from PANG, DORIS; PANG, HENRY to DELAROSA, EDUVIRGE | $243,000 | |
| 2026-03-23 | Sold for $243,000 | $243,000 | $1,827 |
| 2026-03-02 | RPTT&RET $169,000 — from WINDSOR APARTMENTS, INC. to LEON, HERI I | $169,000 | |
| 2026-01-28 | Sold for $169,000 | $169,000 | $1,271 |
| 2025-10-03 | RPTT&RET $355,000 — from WINDSOR APARTMENTS, INC. to APOTHEKER, JEREMY; MANDEL, ARIANE | $355,000 | |
| 2025-09-29 | RPTT&RET $230,000 — from MULFORD, ARTHUR to ARIZA, LIZ MARYS | $230,000 | |
| 2025-09-29 | Sold for $355,000 | $355,000 | $2,669 |
| 2025-09-17 | Sold for $230,000 | $230,000 | $1,729 |
| 2025-08-19 | RPTT&RET $400,000 — from JAYACHANDIRAN, AGALYA to BALTIN, ROBERTA | $400,000 | |
| 2025-08-07 | Sold for $400,000 | $400,000 | $3,008 |
| 2025-07-02 | RPTT&RET $225,000 — from WINDSOR APARTMENTS, INC. to ARGYROS, THEODORA; ARGYROS, VASILI | $225,000 | |
| 2025-06-19 | Sold for $225,000 | $225,000 | $1,692 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 1 | 1 | 25 | 14 | 8 | 49 |
| 2018 | 6 | 2 | 8 | 19 | 3 | 38 |
| 2019 | 5 | 2 | 34 | 14 | 15 | 70 |
| 2020 | 6 | 2 | 15 | 8 | 3 | 34 |
| 2021 | 4 | 1 | 4 | 8 | 2 | 19 |
| 2022 | 5 | 6 | 41 | 24 | 3 | 79 |
| 2023 | 7 | 2 | 11 | 20 | 2 | 42 |
| 2024 | 5 | 1 | 10 | 10 | 4 | 30 |
| 2025 | 1 | 1 | 31 | 12 | 4 | 49 |
| 2026 | 0 | 0 | 59 | 7 | 5 | 71 |
Every one of the 936 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10471 · Landlord rankings · How grades work · The map · The Mice Map