375 recorded events, 1977–2026, from 16 city data systems. The city's paper trail here is mostly 127 311 service requests, 58 ACRIS deeds & mortgages, 51 rodent inspections.
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 51% of 6-24-unit residential buildings citywide. The citywide median for 6-24-unit residential buildings is 16.3 penalty points per 10 units; this building carries 15.5. In ZIP 10032, 36% of residential buildings hold an A and 14% grade D or F. How grades work
Among 46,798 6-24-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.
8 heat or hot-water complaints in the last three years (winter 2024–25: 6 · winter 2025–26: 2). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
24 service requests in the last three years. Most common: Illegal Parking (10) · Noise (8) · HEAT/HOT WATER (4) · Illegal Fireworks (1) · Construction Lead Dust (1).
$21,000 in permitted construction work filed since 2016 (2 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 (1907) |
| Yes | Six or more residential units (20) |
| 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) | 504 WEST 171 STREET OWNERS CAHDFC |
| Head officer | Marina Karfosky |
| Managing agent | Finger Management Realty LLC |
| Last registered | 2025-08-21 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $2,230,000 | $1,003,500 |
| 2026 | $2,371,000 | $1,066,950 |
| 2027 | $2,610,000 | $1,174,500 |
The city's market estimate has risen 17% between tax years 2025 and 2027.
Tax exemptions on the roll: ARTICLE XI
| Heating fuel | NO2FUEL |
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.
| Subway | 168 St — 1 A C · 800 ft straight-line (about a 4-minute walk) · station accessibility: partial |
| Bus | Nearest boarding stop: Amsterdam Av / W 172 St — M101 · 250 ft |
| Citi Bike | Amsterdam Ave & W 172 St · 350 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 008 Luis Belliard Middle: 319, 324. 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.
504 West 171 Street
| 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 |
24 311 service requests from this address in the last three years — 4 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.
Managed by FINGER MANAGEMENT REALTY LLC — 117 buildings, 3,532 units. Grades across the portfolio: A79 · B31 · C6 · D1. See the whole portfolio
showing 60 of 117 buildings
Most recent mortgage recorded against this lot: $600,750 on 2009-09-10 (lender: Ncb Capital Impact). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2026-08-21 | Agreement $1,375,441 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to THE CITY OF NEW YORK | $1,375,441 | |
| 2026-06-24 | RPTT&RET $137,521 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to ISABEL, MARICELA ANTONIA | $137,521 | |
| 2026-06-11 | Sold for $137,521 | $137,521 | $6,876 |
| 2024-02-07 | RPTT&RET $106,916 — from EVANS-FRANTZ, ISAAC to TORRES-ORTEGA, BRIAN | $106,916 | |
| 2022-02-11 | RPTT&RET $92,358 — from BROWN, LEON ADDISON to SPRIMONT KARNOFSKY, MARINA | $92,358 | |
| 2022-02-04 | Sold for $92,358 | $92,358 | $4,618 |
| 2011-12-02 | RPTT&RET $56,700 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to EVANS-FRANTZ, ISAAC | $56,700 | |
| 2010-05-07 | Agreement $1,442,395 — from 504 WEST 171ST STREET OWNERS C.A. HOUSIN to THE CITY OF NEW YORK-DEPTARTMENT OF HOUS | $1,442,395 | |
| 2009-10-27 | RPTT&RET $54,000 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to BROWN, LEON | $54,000 | |
| 2009-09-10 | RPTT&RET $2,500 — from 504 WEST 171ST OWNERS C.A. HDFC to PEGUERO, ROSA MOYA; PEGUERO, RAUL | $2,500 | |
| 2009-09-10 | RPTT&RET $2,500 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to DECENA, JOSEFINA | $2,500 | |
| 2009-09-10 | RPTT&RET $2,500 — from 504 WEST 171ST STREET OWNERS C.A HDFC to SANCHEZ, ANGELA | $2,500 | |
| 2009-09-10 | RPTT&RET $2,500 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to ORTEGA, JOSEFA | $2,500 | |
| 2009-09-10 | RPTT&RET $2,500 — from 504 WEST 171ST STREET OWNERS C.A. HDFC to MONTES, ESPERANZA | $2,500 | |
| 2009-09-10 | Agreement $1,442,395 — from 504 WEST 171ST STREET OWNERS C.A. HOUSIN | $1,442,395 |
| Year | Construction | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 0 | 2 | 0 | 1 | 3 |
| 2018 | 0 | 8 | 0 | 2 | 10 |
| 2019 | 0 | 7 | 0 | 2 | 9 |
| 2020 | 0 | 38 | 0 | 1 | 39 |
| 2021 | 0 | 2 | 0 | 1 | 3 |
| 2022 | 2 | 9 | 3 | 5 | 19 |
| 2023 | 0 | 7 | 1 | 2 | 10 |
| 2024 | 2 | 17 | 1 | 13 | 33 |
| 2025 | 2 | 11 | 0 | 9 | 22 |
| 2026 | 0 | 8 | 3 | 2 | 13 |
Every one of the 375 recorded events, 1977–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10032 · Landlord rankings · How grades work · The map · The Mice Map