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309 Knickerbocker Avenue

533Records
16City systems
63Open violations
93Penalty rate
Brooklyn · ZIP 11237 · Neighborhood: Bushwick (West)
Open in the map

533 recorded events, 1969–2026, from 16 city data systems. The city's paper trail here is mostly 119 311 service requests, 117 HPD complaints, 109 HPD housing violations.

BoroughBrooklyn 11237
Built1931
Floors4
Res. units6
ClassS5
Owner (PLUTO)HARTNICK ENTERPRISESINC
BBL3032200001
BIN3073199

Full record, year by year   Support this site

GRADE B

A modest record — below the level that usually signals systemic problems. More recorded distress than 81% 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 93. In ZIP 11237, 39% of residential buildings hold an A and 15% grade D or F. How grades work

this building
A
B
C

Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

Open HPD violations63 total — 21 class C (immediately hazardous), 19 class B, 23 class A. Oldest open since 1988-08-23.
Active vacate order1 unit(s) under an unrescinded HPD vacate order

status snapshot refreshed weekly from HPD records

Patterns

4 heat or hot-water complaints in the last three years (winter 2025–26: 4).

No bedbug-infested units reported in the last three years of filings.

What 311 hears from this address

22 service requests in the last three years. Most common: Graffiti (3) · Dirty Condition (3) · Illegal Parking (2) · Noise (2) · Vendor Enforcement (2) · UNSANITARY CONDITION (2).

Filed construction activity

$114,800 in permitted construction work filed since 2016 (2 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.

Rent-stabilization signals

YesBuilt before 1974 (1931)
YesSix or more residential units (6)
No421-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 with HPD — the names behind the building

Registered owner(s)HARTNICK ENTERPRISES INC
Head officerSAM KAFIF
Managing agentALBERT KAFIF
Last registered2024-08-14

as filed by the owner in the building's HPD registration

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$1,401,000 $630,450
2026$1,493,000 $671,850
2027$1,690,000 $760,500

The city's market estimate has risen 21% between tax years 2025 and 2027.

Restaurants in this building

RestaurantCuisineGradeNotes
PalmettoAmericanA—

Report to 311: Food poisoning · Food safety complaint

1 restaurant · 0 with mice evidence · See them on the Mice Map

1 Food Establishment complaint to 311 at this address in the last three years (most often: Rodents/Insects/Garbage) · complaints filed by the public; DOHMH investigates, outcomes aren't published.

Flood exposure

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.

6 street-flooding or sewer-backup complaints at this address since 2010 (1 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.

Getting around

SubwayDeKalb Av — L · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: none
BusNearest boarding stop: De Kalb Av / Knickerbocker Av — B38 · 300 ft
Citi BikeSuydam St & Knickerbocker Ave · 200 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.

Report a problem to 311

309 Knickerbocker Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Food poisoningFood poisoning
Food safety complaintFood safety complaint
Anything elseAnything else

22 311 service requests from this address in the last three years — 2 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.

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $750,000 on 2004-09-23 (lender: Astoria Federal Savings And Loan Association). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2004-09-23AL&R $750,000 — from ASTORIA FEDERAL SAVINGS AND LOAN ASSOCIA to HARTNICK ENTERPRISES, INC. $750,000
2004-09-23Mortgage $750,000 — from HARTNICK ENTERPRISES, INC. to ASTORIA FEDERAL SAVINGS AND LOAN ASSOCIA $750,000
1997-10-21Mortgage $1,100,000 — from LEE, JUNG KEUN to COMMERCIAL CAPITAL CORPORATION $1,100,000
1989-03-17Mortgage $200,000 — from LEE, JUNG JUEN to KOREA EXCHANGE BANK $200,000
1987-08-11Mortgage $300,000 — from LEE, JUNG KUEN to KOREA EXCHANGE BANK $300,000

Ten-year activity

50250
2017
2018
2019
2020
2021
2022
2023
33
2024
2025
2026
ConstructionEnforcementHousing & tenantsHealth & systems
Show as table
YearConstructionEnforcementHousing & tenantsHealth & systemsTotal
20170021012
20180031316
2019519419
20200023326
2021009211
20220313622
20230010919
202404141533
20250113317
20260151016
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The full timeline

Construction 14Enforcement 62Housing & tenants 360Ownership & money 19Health & systems 78

Every one of the 533 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