Building Biography

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4007 9 Avenue

78Records
11City systems
2Open violations
0Penalty rate

78 recorded events, 1967–2026, from 11 city data systems. The city's paper trail here is mostly 19 311 service requests, 17 ACRIS deeds & mortgages, 10 boiler inspections.

BoroughBrooklyn 11232
Built1899
Floors2
Res. units1
ClassS1
Owner (PLUTO)GWENDOLIN CHU
BBL3055860009
BIN3135341

Full record, year by year   Support this site

GRADE A

The city's published records show little recorded distress here in the last three years. Less recorded distress than 100% 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 0. In ZIP 11232, 65% of residential buildings hold an A and 8% grade D or F. How grades work

this building
A
C

Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

Open HPD violations2 total — 1 class C (immediately hazardous), 1 class B, 0 class A. Oldest open since 2003-10-01.

status snapshot refreshed weekly from HPD records

Patterns

No heat or hot-water complaints in the last three years.

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

What 311 hears from this address

3 service requests in the last three years. Most common: Consumer Complaint (1) · Noise (1) · Damaged Tree (1).

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 (1899)
NoSix or more residential units (1)
No421-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).

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$1,001,000 $60,060
2026$1,032,000 $61,920
2027$1,106,000 $66,360

The city's market estimate has risen 10% between tax years 2025 and 2027.

Restaurants in this building

RestaurantCuisineGradeNotes
Ho Ho BakeryBakery Products/DessertsA—

Report to 311: Food poisoning · Food safety complaint

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

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

Subway9 Av — D · 600 ft straight-line (about a 3-minute walk) · station accessibility: none
BusNearest boarding stop: 39 St / 9 Av — B35 · 350 ft
Citi BikeNew Utrecht Ave & 9 Ave · 550 ft · station location as of 2026-09-23; live availability
School zones (2024–25 map)Elementary: P.S. 131 Brooklyn
Middle: J.H.S. 223 The Montauk. 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

4007 9 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

3 311 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.

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $120,000 on 1987-05-29 (lender: Atlantic Bank Of NY). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2015-12-08Deed $30,548 — from CHU, TONY to CHU, GWENDOLIN $30,548
1987-05-29Mortgage $120,000 — from CHU, TONY to ATLANTIC BANK OF NY $120,000
1986-10-15Mortgage $20,000 — from MAALOUF, ELIAS to GILLEN, JOHN J; GILLEN, CORINNE $20,000
1986-10-10Mortgage $84,400 — from MAALOUF, ELIAS to GREEN POINT SAVINGSBANK $84,400
1985-06-25Mortgage $35,000 — from GILLEN, JOHN J; GILLEN, CORINNE to GREEN POINT SAVS BANK $35,000
1985-06-21Mortgage $18,000 — from GILLEN, CORINNE; GILLEN, JOHN J to CENSULLO, RALPH; CENSULLO, IDA $18,000

Ten-year activity

530
2017
2018
2019
2020
2021
4
2022
2023
2024
2025
2026
Housing & tenantsHealth & systems
Show as table
YearHousing & tenantsHealth & systemsTotal
2017011
2018112
2019011
2020213
2021112
2022134
2023033
2024123
2025022
2026213
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The full timeline

Construction 11Enforcement 4Housing & tenants 26Ownership & money 17Health & systems 20

Every one of the 78 recorded events, 1967–2026, is laid out year by year in the full report (print-ready).

Explore: ZIP 11232 · Landlord rankings · How grades work · The map · The Mice Map