446 recorded events, 1900–2026, from 16 city data systems. The city's paper trail here is mostly 166 311 service requests, 86 HPD housing violations, 85 HPD complaints.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 68% 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 60.8. In ZIP 10033, 41% of residential buildings hold an A and 10% grade D or F. How grades work
Among 17,252 25-99-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 56 total — 12 class C (immediately hazardous), 32 class B, 12 class A. Oldest open since 1997-12-19. |
status snapshot refreshed weekly from HPD records
6 heat or hot-water complaints in the last three years (winter 2023–24: 4 · winter 2024–25: 2). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
38 service requests in the last three years. Most common: Noise (11) · HEAT/HOT WATER (3) · Water System (3) · DOOR/WINDOW (3) · Illegal Parking (2) · Rodent (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 (1915) |
| 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) | W186 LLC |
| Head officer | KENNETH DIAMONDSTONE |
| Managing agent | JALEN MANAGEMENT COMPANY |
| Last registered | 2025-09-25 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,089,000 | $490,050 |
| 2026 | $1,194,000 | $537,300 |
| 2027 | $1,271,000 | $571,950 |
The city's market estimate has risen 17% 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 | 191 St — 1 · 0.2 mi straight-line (about a 6-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Saint Nicholas Av / W 187 St — M3 · 150 ft |
| Citi Bike | W 186 St & St Nicholas Ave · 250 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 048 P.O. Michael J. Buczek Middle: 143, 346, 348. 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.
609 West 186 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 |
38 311 service requests from this address in the last three years — 3 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 JALEN MANAGEMENT COMPANY — 43 buildings, 2,278 units. Grades across the portfolio: A30 · B11 · C2. See the whole portfolio
Most recent mortgage recorded against this lot: $648,890 on 2015-12-09 (lender: M.y. Safra Bank, FSB). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2015-12-09 | Agreement $2,000,000 — from W 186, L.L.C. to M.Y. SAFRA BANK, FSB | $2,000,000 | |
| 2015-12-09 | AL&R $2,000,000 — from W 186, L.L.C. | $2,000,000 | |
| 2015-12-09 | Mortgage $648,891 — from W 186, L.L.C. to M.Y. SAFRA BANK, FSB | $648,891 | |
| 2013-02-07 | Agreement $1,400,000 — from W 186, L.L.C. to ASTORIA FEDERAL SAVINGS AND LOAN ASSOCIA | $1,400,000 | |
| 2013-02-07 | Mortgage $573,594 — from W 186, L.L.C. to ASTORIA FEDERAL SAVINGS AND LOAN ASSOCIA | $573,594 | |
| 2004-05-03 | Mortgage $500,328 — from W 186 LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $500,328 | |
| 2004-05-03 | Agreement $975,000 — from W 186 LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $975,000 | |
| 1998-08-07 | Mortgage $525,000 — from W 186, L.L.C., to ASTORIA FEDERAL SAVINGS & LOAN ASSOCIATI | $525,000 | |
| 1990-07-11 | Mortgage $100,000 — from DIAMONDSTONE,KENNETHAKA; DIAMONDSTONE, KEN to WEINSTEIN, HENRY | $100,000 | |
| 1988-07-15 | Mortgage $113,700 — from DIAMONDSTONE, KEN to ESHAGHIAN, E IKE; ESHAGHIAN, DAVID | $113,700 | |
| 1985-04-26 | Mortgage $177,000 — from ESHAGHIAN, E.IKE; ESHAGHIAN, DAVID to KARAKIROS, CATHERINE; KARAKIROS, MENAS | $177,000 |
| Year | Enforcement | Housing & tenants | Health & systems | Total |
|---|---|---|---|---|
| 2017 | 0 | 3 | 2 | 5 |
| 2018 | 1 | 15 | 2 | 18 |
| 2019 | 0 | 4 | 2 | 6 |
| 2020 | 1 | 6 | 1 | 8 |
| 2021 | 0 | 36 | 1 | 37 |
| 2022 | 0 | 51 | 3 | 54 |
| 2023 | 0 | 47 | 2 | 49 |
| 2024 | 0 | 11 | 4 | 15 |
| 2025 | 0 | 69 | 4 | 73 |
| 2026 | 0 | 17 | 2 | 19 |
Every one of the 446 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10033 · Landlord rankings · How grades work · The map · The Mice Map