147 recorded events, 1969–2026, from 13 city data systems. The city's paper trail here is mostly 22 DOB permits, 22 311 service requests, 22 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 85% 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 1.7. In ZIP 11237, 39% of residential buildings hold an A and 15% grade D or F. How grades work
Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 3 total — 3 class C (immediately hazardous), 0 class B, 0 class A. Oldest open since 1978-04-21. |
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.
5 service requests in the last three years. Most common: Noise (2) · Graffiti (1) · Illegal Dumping (1) · Emergency Response Team (ERT) (1).
$1,154,100 in permitted construction work filed since 2016 (10 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 (1931) |
| Yes | Six or more residential units (6) |
| 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) | Knickerbocker 427 LLC |
| Head officer | Mike Nassimi |
| Managing agent | Winbrook Management, LLC |
| Last registered | 2025-10-06 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $798,000 | $359,100 |
| 2026 | $851,000 | $382,950 |
| 2027 | $963,000 | $433,350 |
The city's market estimate has risen 21% between tax years 2025 and 2027.
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 | Knickerbocker Av — M · 300 ft straight-line (about a 2-minute walk) · station accessibility: none DeKalb Av — L · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Myrtle Av / Knickerbocker Av — B54 · 450 ft |
| Citi Bike | Greene Ave & Myrtle Ave · 450 ft · station location as of 2026-09-23; live availability |
| Bike facility | Painted bike lane mapped within 75 ft |
| School zones (2024–25 map) | Elementary: P.S. 086 The Irvington Middle: J.H.S. 162 The Willoughby. 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.
427 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 |
| Anything else | Anything else |
5 311 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 WINBROOK MANAGEMENT, LLC — 2 buildings, 10 units. Grades across the portfolio: A1 · C1. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 427 Knickerbocker Avenue | BK | 6 | A |
| 431 Knickerbocker Avenue | BK | 4 | C |
Most recent mortgage recorded against this lot: $1,555,000 on 2023-01-17 (lender: Flagstar Bank, N.A.), 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 |
|---|---|---|---|
| 2023-01-17 | Agreement $5,555,000 — from KNICKERBOCKER 427, LLC to FLAGSTAR BANK, N.A. | $5,555,000 | |
| 2023-01-17 | Mortgage $1,555,000 — from KNICKERBOCKER 427, LLC to FLAGSTAR BANK, N.A. | $1,555,000 | |
| 2023-01-17 | AL&R $5,555,000 — from KNICKERBOCKER 427, LLC to FLAGSTAR BANK, N.A. | $5,555,000 | |
| 2017-05-25 | Mortgage $5,000,000 — from KNICKERBOCKER 427, LLC to ISRAEL DISCOUNT BANK OF NEW YORK | $5,000,000 | |
| 2017-05-25 | AL&R $5,000,000 — from KNICKERBOCKER 427, LLC to ISRAEL DISCOUNT BANK OF NEW YORK | $5,000,000 | |
| 2017-05-19 | Deed $6,000,000 — from COHEN & GREENBERG LLC to KNICKERBOCKER 427, LLC | $6,000,000 | |
| 2017-05-12 | Sold for $6,000,000 | $6,000,000 | $1,000,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 0 | 0 | 4 | 4 | 3 | 11 |
| 2018 | 3 | 1 | 5 | 0 | 2 | 11 |
| 2019 | 6 | 6 | 4 | 1 | 2 | 19 |
| 2020 | 3 | 3 | 1 | 0 | 2 | 9 |
| 2021 | 9 | 2 | 2 | 0 | 1 | 14 |
| 2022 | 11 | 0 | 5 | 0 | 2 | 18 |
| 2023 | 3 | 0 | 3 | 5 | 2 | 13 |
| 2024 | 0 | 0 | 1 | 0 | 2 | 3 |
| 2025 | 0 | 0 | 4 | 0 | 2 | 6 |
| 2026 | 0 | 1 | 3 | 0 | 1 | 5 |
Every one of the 147 recorded events, 1969–2026, 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