220 recorded events, 1974–2026, from 14 city data systems. The city's paper trail here is mostly 58 311 service requests, 57 HPD housing violations, 33 HPD complaints.
Full record, year by year Support this site
A sustained record of distress well beyond its peers. More recorded distress than 99% of 1-5-unit residential buildings citywide. The citywide median for 1-5-unit residential buildings is 0 penalty points per 10 units; this building carries 189. In ZIP 11237, 39% of residential buildings hold an A and 15% grade D or F. How grades work
Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 45 total — 13 class C (immediately hazardous), 18 class B, 14 class A. Oldest open since 1988-07-26. |
status snapshot refreshed weekly from HPD records
2 heat or hot-water complaints in the last three years (winter 2025–26: 2).
No bedbug-infested units reported in the last three years of filings.
18 service requests in the last three years. Most common: Noise (11) · Graffiti (2) · DOOR/WINDOW (2) · PLUMBING (1) · ELECTRIC (1) · HEAT/HOT WATER (1).
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 (1931) |
| No | Six or more residential units (4) |
| No | 421-a / J-51 tax benefit on the current tax roll |
1 of 3 signals present. Only a partial profile — stabilization is possible but less likely. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | QUAN YUAN PROPERTY CORP |
| Head officer | FANG YING GAO |
| Managing agent | ERIC LIN |
| Last registered | 2024-01-27 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,023,200 | $460,440 |
| 2026 | $869,000 | $391,050 |
| 2027 | $1,017,000 | $457,650 |
The city's market estimate has fallen 1% between tax years 2025 and 2027.
| Restaurant | Cuisine | Grade | Notes |
|---|---|---|---|
| Sopa De Caracol | Spanish | Grade Pending | — |
Report to 311: Food poisoning · Food safety complaint
1 restaurant · 0 with mice evidence · See them on the Mice Map
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Hurricane evacuation zone 6 of 6 — zone 1 evacuates first.
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 | Morgan Av — L · 0.3 mi straight-line (about an 8-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Flushing Av / Knickerbocker Av — B57 · 500 ft |
| Citi Bike | Knickerbocker Ave & George St · 400 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 145 Andrew Jackson Middle: 347, 349. 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.
186 Knickerbocker 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 |
| Food poisoning | Food poisoning |
| Food safety complaint | Food safety complaint |
| Anything else | Anything else |
18 311 service requests from this address in the last three years — 1 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.
Most recent mortgage recorded against this lot: $45,000 on 1989-02-08 (lender: Chang, Hsaio Wei and Tam, Hall Ping). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 1989-02-08 | Mortgage $45,000 — from LAM, KIEN NING to TONG, KWAI CHUN; TAM, HALL PING; CHANG, HSAIO WEI | $45,000 |
| Year | Enforcement | Housing & tenants | Health & systems | Total |
|---|---|---|---|---|
| 2017 | 1 | 2 | 2 | 5 |
| 2018 | 0 | 3 | 2 | 5 |
| 2019 | 0 | 1 | 2 | 3 |
| 2020 | 0 | 4 | 1 | 5 |
| 2021 | 1 | 5 | 1 | 7 |
| 2022 | 0 | 12 | 5 | 17 |
| 2023 | 0 | 48 | 9 | 57 |
| 2024 | 0 | 10 | 3 | 13 |
| 2025 | 0 | 16 | 2 | 18 |
| 2026 | 0 | 9 | 5 | 14 |
Every one of the 220 recorded events, 1974–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11237 · Landlord rankings · How grades work · The map · The Mice Map