1,450 recorded events, 1967–2026, from 16 city data systems. The city's paper trail here is mostly 588 HPD complaints, 487 311 service requests, 151 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 65% 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 33.4. 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.
24 heat or hot-water complaints in the last three years (winter 2023–24: 6 · winter 2024–25: 14 · winter 2025–26: 4). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
$400 in enforcement penalties imposed (ECB/OATH) in the last three years.
90 service requests in the last three years. Most common: Noise (59) · HEAT/HOT WATER (12) · UNSANITARY CONDITION (4) · Lead (2) · Residential Disposal Complaint (2) · ELECTRIC (2).
No permitted work with a declared cost filed in the last decade. 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 (22) |
| 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) | 510 WEST 171ST REALTY LLC |
| Head officer | ALEX KOHEN |
| Managing agent | EXECUTIVE TOWERS LLC |
| Last registered | 2025-09-09 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,129,000 | $508,050 |
| 2026 | $1,249,000 | $562,050 |
| 2027 | $1,331,000 | $598,950 |
The city's market estimate has risen 18% between tax years 2025 and 2027.
| 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 · 650 ft straight-line (about a 3-minute walk) · station accessibility: partial |
| Bus | Nearest boarding stop: Amsterdam Av / W 172 St — M101 · 350 ft |
| Citi Bike | Amsterdam Ave & W 172 St · 450 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.
510 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 |
90 311 service requests from this address in the last three years — 12 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 EXECUTIVE TOWERS LLC — 16 buildings, 586 units. Grades across the portfolio: A6 · B8 · C2. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 61 Ellwood Street | MN | 72 | B |
| 68 Thayer Street | MN | 68 | A |
| 172 Sherman Avenue | MN | 41 | B |
| 164 Sherman Avenue | MN | 41 | A |
| 156 Sherman Avenue | MN | 40 | A |
| 170 Vermilyea Avenue | MN | 40 | C |
| 160 Sherman Avenue | MN | 40 | B |
| 506 West 150 Street | MN | 31 | A |
| 154 Vermilyea Avenue | MN | 30 | B |
| 510 West 150 Street | MN | 30 | B |
| 150 Vermilyea Avenue | MN | 30 | B |
| 403 West 205 Street | MN | 29 | A |
| 158 Vermilyea Avenue | MN | 26 | C |
| 526 West 211 Street | MN | 25 | B |
| 510 West 171 Street | MN | 22 | B |
| 516 West 174 Street | MN | 21 | A |
Most recent mortgage recorded against this lot: $200,000 on 2019-01-04 (lender: First Republic 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 |
|---|---|---|---|
| 2019-01-04 | AL&R $2,600,000 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $2,600,000 | |
| 2019-01-04 | Agreement $2,600,000 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $2,600,000 | |
| 2019-01-04 | Mortgage $200,000 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $200,000 | |
| 2015-01-15 | Agreement $2,400,000 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $2,400,000 | |
| 2015-01-15 | Mortgage $811,749 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $811,749 | |
| 2015-01-15 | AL&R $2,400,000 — from 510 WEST 171ST REALTY LLC to FIRST REPUBLIC BANK | $2,400,000 | |
| 2013-06-20 | Mortgage $575,917 — from 510 WEST 171ST REALTY LLC to NEW YORK COMMUNITY BANK | $575,917 | |
| 2013-06-20 | AL&R $1,640,000 — from 510 WEST 171ST REALTY LLC to NEW YORK COMMUNITY BANK | $1,640,000 | |
| 2013-06-20 | Agreement $1,640,000 — from 510 WEST 171ST REALTY LLC to NEW YORK COMMUNITY BANK | $1,640,000 | |
| 2013-06-20 | Deed $2,190,114 — from 510 WEST 171 LLC to 510 WEST 171ST REALTY LLC | $2,190,114 | |
| 2011-11-28 | Agreement $1,092,497 — from 510171 LLC; 510 WEST 171 LLC to NEW YORK COMMUNUTY BANK | $1,092,497 | |
| 2011-11-28 | AL&R $1,092,497 — from 510 WEST 171 LLC to NEW YORK COMMUNUTY BANK | $1,092,497 | |
| 2011-11-28 | Deed $1,576,025 — from 510171 LLC to 510 WEST 171 LLC | $1,576,025 | |
| 2011-05-02 | Agreement $1,103,251 — from 510171, LLC to NEW YORK COMMUNITY BANK | $1,103,251 | |
| 2007-09-21 | Agreement $1,130,000 — from 510171 LLC to NEW YORK COMMUNITY BANK | $1,130,000 |
| Year | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 1 | 44 | 0 | 2 | 47 |
| 2018 | 3 | 47 | 0 | 2 | 52 |
| 2019 | 1 | 26 | 3 | 2 | 32 |
| 2020 | 0 | 16 | 0 | 1 | 17 |
| 2021 | 0 | 16 | 0 | 1 | 17 |
| 2022 | 3 | 14 | 0 | 2 | 19 |
| 2023 | 0 | 7 | 0 | 2 | 9 |
| 2024 | 0 | 19 | 2 | 3 | 24 |
| 2025 | 3 | 64 | 0 | 3 | 70 |
| 2026 | 0 | 40 | 0 | 3 | 43 |
Every one of the 1,450 recorded events, 1967–2026, 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