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7424 21 Avenue

3,583Records
14City systems
78Open violations
2215.3Penalty rate
Brooklyn · ZIP 11204 · Neighborhood: Bensonhurst
Open in the map

3,583 recorded events, 1969–2026, from 14 city data systems. The city's paper trail here is mostly 1,587 HPD complaints, 1,532 311 service requests, 371 HPD housing violations.

BoroughBrooklyn 11204
Built1927
Floors3
Res. units6
ClassC2
Owner (PLUTO)CHEONG WING LAU
BBL3062180041
BIN3159791

Full record, year by year   Support this site

GRADE F

A sustained record of distress well beyond its peers. More recorded distress than 99% 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 2215.3. In ZIP 11204, 76% of residential buildings hold an A and 4% 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 violations78 total — 35 class C (immediately hazardous), 24 class B, 19 class A. Oldest open since 2018-10-22.

status snapshot refreshed weekly from HPD records

Patterns

895 heat or hot-water complaints in the last three years (winter 2023–24: 250 · winter 2024–25: 74 · winter 2025–26: 318 · winter 2026–27: 59). Repeated winter clusters suggest a chronic heating problem.

250
’23–24
74
’24–25
318
’25–26
59
’26–27

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

$1,250 in enforcement penalties imposed (ECB/OATH) in the last three years.

What 311 hears from this address

711 service requests in the last three years. Most common: HEAT/HOT WATER (447) · UNSANITARY CONDITION (115) · DOOR/WINDOW (74) · Boilers (16) · PLUMBING (12) · WATER LEAK (10).

Filed construction activity

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.

Rent-stabilization signals

YesBuilt before 1974 (1927)
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)CheongWing LAU
Last registered2026-02-06

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

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$939,000 $422,550
2026$1,064,000 $478,800
2027$1,277,000 $574,650

The city's market estimate has risen 36% between tax years 2025 and 2027.

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.

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.

Getting around

SubwayBay Pkwy — N · 0.4 mi straight-line (about an 11-minute walk) · station accessibility: none
BusNearest boarding stop: Bay Ridge Pkwy / 21 Av — B4 · 100 ft
School zones (2024–25 map)Elementary: P.S. 247 Brooklyn
Middle: I.S. 096 Seth Low. 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

7424 21 Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Anything elseAnything else

711 311 service requests from this address in the last three years — 447 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: $229,000 on 2005-07-21 (lender: Flushing Savings Bank, FSB). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2005-07-21Mortgage $229,000 — from LAU, CHEONG WING to FLUSHING SAVINGS BANK, FSB $229,000
2005-07-21AL&R $229,000 — from FLUSHING SAVINGS BANK, FSB to LAU, CHEONG WING $229,000
2005-07-21Deed $510,000 — from WU, KWOK FONG to LAU, CHEONG WING $510,000
1984-08-31Mortgage $60,000 — from WU, KWOK FONG to GREEN POINT SAVINGSBANK $60,000
1983-01-13Mortgage $70,000 — from CHAN, SAU CHUN; CHAN, WUN CHEUNG to LARKIN, MARINYA; LARKIN, MARY AKA; RUSKEWICH, ALEX $70,000
1983-01-13Mortgage $70,000 — from CHAN, WUN CHEUNG; CHAN, SAU CHUN to LARKIN, MARINYA; LARKIN, MARY AKA $70,000

Ten-year activity

1,0005000
2017
2018
2019
2020
2021
2022
2023
2024
2025
624
2026
EnforcementHousing & tenantsOwnership & moneyHealth & systems
Show as table
YearEnforcementHousing & tenantsOwnership & moneyHealth & systemsTotal
20170850388
2018025505260
20190330134
2020011601117
2021254301546
2022022004224
20230902193
2024045401455
20251342501439
2026761403624
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The full timeline

Construction 4Enforcement 32Housing & tenants 3,497Ownership & money 20Health & systems 30

Every one of the 3,583 recorded events, 1969–2026, is laid out year by year in the full report (print-ready).

Explore: ZIP 11204 · Landlord rankings · How grades work · The map · The Mice Map