237 recorded events, 1973–2026, from 12 city data systems. The city's paper trail here is mostly 82 311 service requests, 31 ACRIS deeds & mortgages, 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. More recorded distress than 50% 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 16.7. 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 | 2 total — 2 class C (immediately hazardous), 0 class B, 0 class A. Oldest open since 2008-06-26. |
status snapshot refreshed weekly from HPD records
2 heat or hot-water complaints in the last three years (winter 2023–24: 2).
No bedbug-infested units reported in the last three years of filings.
$1,875 in enforcement penalties imposed (ECB/OATH) in the last three years.
20 service requests in the last three years. Most common: Real Time Enforcement (7) · Investigations and Discipline (IAD) (2) · Consumer Complaint (2) · Abandoned Bike (1) · HEAT/HOT WATER (1) · Plumbing (1).
$55,000 in permitted construction work filed since 2016 (3 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) | 323 KNICKERBOCKER LLC |
| Head officer | MORRIS KAY |
| Managing agent | RENAISSANCE REALTY GROUP 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 | $1,296,000 | $583,200 |
| 2026 | $1,037,000 | $466,650 |
| 2027 | $1,241,000 | $558,450 |
The city's market estimate has fallen 4% 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.
3 street-flooding or sewer-backup complaints at this address since 2011 (0 in the last three years).
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | DeKalb Av — L · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: none Knickerbocker Av — M · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: De Kalb Av / Knickerbocker Av — B38 · 150 ft |
| Citi Bike | Suydam St & Knickerbocker Ave · 350 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 123 Suydam 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.
323 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 |
20 311 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.
Managed by RENAISSANCE REALTY GROUP LLC — 36 buildings, 922 units. Grades across the portfolio: A11 · B20 · C2 · D3. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 134 East 122 Street | MN | 92 | A |
| 60 West 129 Street | MN | 55 | A |
| 607 Lenox Avenue | MN | 53 | B |
| 92 Morningside Avenue | MN | 48 | A |
| 1354 Bedford Avenue | BK | 40 | B |
| 553 West 174 Street | MN | 38 | A |
| 285 Schenectady Avenue | BK | 38 | B |
| 285 Eastern Parkway | BK | 33 | B |
| 487 Lincoln Place | BK | 31 | B |
| 493 Lincoln Place | BK | 31 | B |
| 495 Lincoln Place | BK | 31 | A |
| 1561 Pitkin Avenue | BK | 31 | B |
| 505 Lincoln Place | BK | 30 | B |
| 519 Lincoln Place | BK | 25 | B |
| 2188 Atlantic Avenue | BK | 25 | A |
| 511 Lincoln Place | BK | 24 | B |
| 117 West 142 Street | MN | 24 | B |
| 221 East 10 Street | MN | 24 | A |
| 527 Lincoln Place | BK | 24 | B |
| 1806 Caton Avenue | BK | 24 | B |
| 1646 Union Street | BK | 23 | C |
| 332 East 9 Street | MN | 20 | B |
| 726 DeKalb Avenue | BK | 20 | B |
| 58 St Marks Place | MN | 19 | B |
| 299 Knickerbocker Avenue | BK | 18 | A |
| 1155 Dean Street | BK | 16 | B |
| 45 Argyle Road | BK | 16 | A |
| 1151 Dean Street | BK | 16 | B |
| 230 Willis Avenue | BX | 16 | A |
| 724 DeKalb Avenue | BK | 14 | B |
| 323 Knickerbocker Avenue | BK | 6 | A |
| 235 Utica Avenue | BK | 4 | D |
| 146 Wyckoff Avenue | BK | 4 | D |
| 1024 Broadway | BK | 3 | B |
| 1022 Broadway | BK | 3 | C |
| 1026 Broadway | BK | 3 | D |
Most recent mortgage recorded against this lot: $650,000 on 2022-12-20 (lender: Kearny 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 |
|---|---|---|---|
| 2022-12-20 | Mortgage $650,000 — from 323 KNICKERBOCKER ASSOC., LLC to KEARNY BANK | $650,000 | |
| 2022-12-20 | Agreement $2,650,000 — from 323 KNICKERBOCKER ASSOC., LLC to KEARNY BANK | $2,650,000 | |
| 2022-12-20 | AL&R $2,650,000 — from 323 KNICKERBOCKER ASSOC., LLC to KEARNY BANK | $2,650,000 | |
| 2015-07-15 | AL&R $2,000,000 — from 323 KNICKERBOCKER ASSOC., LLC to SIGNATURE BANK | $2,000,000 | |
| 2015-07-15 | M&CON $2,000,000 — from 323 KNICKERBOCKER ASSOC., LLC to SIGNATURE BANK | $2,000,000 | |
| 2013-06-26 | Agreement $7,100,000 — from 293-299 KNICKERBOCKER LLC; 323 KNICKERBOCKER ASSOC., LLC to NEW YORK COMMUNITY BANK | $7,100,000 | |
| 2013-06-26 | Agreement $1,900,000 — from 323 KNICKERBOCKER ASSOC., LLC to NEW YORK COMMUNITY BANK | $1,900,000 | |
| 2013-06-12 | Agreement $7,100,000 — from 293-299 KNICKERBOCKER LLC; 323 KNICKERBOCKER ASSOC., LLC to NEW YORK COMMUNITY BANK | $7,100,000 | |
| 2008-02-29 | Mortgage $2,050,000 — from 323 KNICKERBOCKER ASSOC., LLC to NORTH FORK BANK, A DIVISION OF CAPITAL O | $2,050,000 | |
| 2006-10-27 | Deed $730,000 — from YOO, WON CHUL to 323 KNICKERBOCKER ASSOC, LLC | $730,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 5 | 1 | 2 | 0 | 2 | 10 |
| 2018 | 0 | 2 | 4 | 0 | 2 | 8 |
| 2019 | 0 | 0 | 6 | 0 | 2 | 8 |
| 2020 | 0 | 0 | 11 | 0 | 1 | 12 |
| 2021 | 0 | 3 | 4 | 0 | 1 | 8 |
| 2022 | 0 | 3 | 14 | 5 | 2 | 24 |
| 2023 | 0 | 3 | 4 | 0 | 2 | 9 |
| 2024 | 0 | 14 | 14 | 0 | 2 | 30 |
| 2025 | 0 | 2 | 6 | 0 | 2 | 10 |
| 2026 | 0 | 0 | 5 | 0 | 2 | 7 |
Every one of the 237 recorded events, 1973–2026, 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