Building record from city data · BROOKLYN, NY

4311 4 Ave

Printed 2026-10-21 from blueflo.tech/b/4311-4-avenue-brooklyn, where it is kept current. These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Not a warranty. May not be used for tenant screening (terms of use).

built 1931 · 3 stories · 6 apartments · BIN 3010948 · BBL 3007290006

Checked in city records
Checked in city records: non-lead water line, outside FEMA flood zones and stormwater maps, no open housing-condition violations
Source: FEMA National Flood Hazard Layer, Housing Maintenance Code Violations, Lead Service Line Location Coordinates · as of 2026-01-30
Also on record
Clean in the records
Registered with the city

Hong Jian Realty LLC

Pests: 6 reports to the city since 2024
2024Pests · Apr 2024 · 1 report (1 complaint)Apr 29, 2024Pests · Nov 2024 · 1 report (3 complaints)Nov 25, 2024Nov 25, 2024 (2nd)Nov 25, 2024 (3rd)
2025Pests · Jul 2025 · 1 report (3 complaints)Jul 3, 2025Jul 3, 2025 (2nd)Jul 3, 2025 (3rd)Pests · Aug 2025 · 1 report (1 complaint)Aug 18, 2025Pests · Sep 2025 · 1 report (1 complaint)Sep 17, 2025Pests · Oct 2025 · 1 report (1 complaint)Oct 23, 2025
2026
Source: HPD Complaints and Problems · as of 2026-10-21

Also reported

2024 – 2026

A filled month had a report to HPD; darker means more than one, and the past year is brightest. Tap one to read it. Complaints within a week count as one report. Records list complaints filed, not conditions found.

Apartments named in these records

Apt 1L 28Apt 1R 9Apt 2L 7Apt 2R 2Apt 3R 7Apt IL 2

6 of this building’s 6 apartments are named in a city record. The rest have no record naming them, which is the usual case.

These are city records about an apartment, not about anyone who lives or lived there. They may not be used to screen a tenant.

Heat and hot water

Issues on record (2023) · 1 complaint, 2025
What has happened here
2025 Nov
Heat or hot waterApt 2L complaint
2025 Jul
Heat or hot waterApt 1R class C · closed · HPD violation
2024 Jan
Heat or hot waterApt 1L complaint
2023 Dec
Heat or hot waterApt 1R complaint
2023 Dec
Heat or hot waterApt 1R complaint
2023 Jun
Low Pressure Boiler DOB violation
Show 1 more
2023 Apr
Low Pressure Boiler DOB violation
Boiler inspection filings

Latest accepted inspection May 2025, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-19 · See the boiler filings at DOB →
What this counts

Accepted annual boiler inspection filings, any date

Boiler work permits

Latest boiler work permit 2020

DOB Permit Issuance (BIS), as of 2026-10-19
What this counts

DOB boiler permits (BIS and DOB NOW); a permit dates work, not the boiler's age

Heat and hot water complaints

1 heat or hot water complaint

Housing Maintenance Code Complaints and Problems, as of 2026-10-20 · See the complaints at HPD Online →
What this counts

HPD complaints, heat season 2025–26 (Oct 1–May 31)

  • Heat sourceno recordNo boiler registration or district steam on record

Water and pipes

5 complaints, 2025–2026 · 2 in the past year
What has happened here
2026 May
PlumbingApt 1L complaint
2026 Apr
Leaks class B · closed · HPD violation
2025 Nov
LeaksApt 1L class B · closed · HPD violation
2025 Oct
PlumbingApt 1L complaint
2025 Sep
PlumbingApt 1L class B · closed · HPD violation
2025 Jul
PlumbingApt 3R complaint
Show 7 more
2025 Jul
PlumbingApt 1L complaint
2025 Jul
PlumbingApt 1R complaint
2024 May
PlumbingApt 1R complaint
2024 May
PlumbingApt 2L complaint
2024 Apr
PlumbingApt 3R complaint
2024 Apr
PlumbingApt IL complaint
2020 Jun
Plumbing permit
Water service line

Non-Lead (field inspection)

Lead Service Line Location Coordinates, as of 2026-01-30

Pests and cleanliness

12 complaints, 2024–2026 · 3 in the past year
What has happened here
2026 Sep
Unsanitary conditions complaint
2026 Mar
MoldApt 2L complaint
2025 Nov
MoldApt 1L class A · closed · HPD violation
2025 Nov
PestsApt 1L class C · closed · HPD violation
2025 Nov
PestsApt 1L class C · closed · HPD violation
2025 Oct
PestsApt 1L complaint
Show 18 more
2025 Sep
Rubbish and cleanliness class B · closed · HPD violation
2025 Sep
Pests class C · closed · HPD violation
2025 Sep
Rubbish and cleanliness class A · closed · HPD violation
2025 Sep
Unsanitary conditions, pestsApt 1L complaint
2025 Sep
Pests class C · closed · HPD violation
2025 Sep
PestsApt 1L class C · closed · HPD violation
2025 Sep
PestsApt 1L class C · closed · HPD violation
2025 Aug
PestsApt 1L complaint
2025 Jul
Mold complaint
2025 Jul
PestsApt 3R complaint
2025 Jul
Mold, pestsApt 1L complaint
2025 Jul
PestsApt 1R complaint
2025 Jun
Pests class A · paperwork · closed · HPD violation
2024 Nov
PestsApt 1L complaint
2024 Nov
Mold, pestsApt 2R complaint
2024 Nov
PestsApt 1R complaint
2024 Apr
MoldApt 3R complaint
2024 Apr
PestsApt IL complaint

Fire and safety

3 resolved since 2025
What has happened here
2026 Apr
Fire safety class B · closed · HPD violation
2026 Apr
Fire safety class B · closed · HPD violation
2025 Sep
Lead-based paintApt 1L class C · closed · HPD violation

Electrical

1 complaint, 2026
What has happened here
2026 Mar
ElectricalApt 2L complaint

Structure and facade

3 resolved since 2025
What has happened here
2026 Apr
Walls, floors and stairs class A · closed · HPD violation
2026 Apr
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Doors and windowsApt 1L class B · closed · HPD violation
2020 Sep
General construction permit
  • Facade ratingnot requiredNot required: facade inspections apply only to buildings taller than 6 stories
  • Sidewalk shed and scaffoldingno recordNo sidewalk shed permits on record
  • Landmark statusno recordNot in a historic district on record

Flooding

No issues on record
FEMA flood zone

Outside FEMA's 1% annual-chance flood zone: X

FEMA National Flood Hazard Layer, as of 2026-10-20
What this counts

Effective FIRM zones touching the building footprint

Stormwater flooding

Extreme storm, 2080 sea levels: Not in mapped flooding; Moderate storm, 2050 sea levels: Not in mapped flooding; Moderate storm, today's sea levels: Not in mapped flooding; Limited storm, today's sea levels: Not loaded (file format unreadable)

NYC Stormwater Flood Maps, as of 2024-07-03
What this counts

Mapped ponding touching the building footprint

  • Basementno recordUnknown

Rent and tenancy

On the state list
Rent stabilization

On the state's list of buildings with at least one rent-stabilized apartment (2024 registrations)

Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30
What this counts

The list doesn't say which apartments are stabilized, and being listed isn't proof of current status. For a specific apartment, request its rent history from HCR

General condition and all records

DOB violations

2 open: 2 about building conditions

2023 Jun
Low Pressure Boiler
2023 Apr
Low Pressure Boiler
DOB Violations, as of 2026-10-19 · Read these violations in full at DOB →
What this counts

Open DOB, ECB and DOB NOW Safety violations, any date, one per violation. ECB class 1 = hazardous, class 2 = major

Permit history

3 permits since 1990

2020 Sep
General construction permit
2020 Jul
Boiler equipment permit
2020 Jun
Plumbing permit
DOB NOW: Build – Approved Permits, as of 2026-10-19 · See every permit at DOB →
What this counts

DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds

Everything else on record
2026 May
Outside the building complaint
2026 Apr
Other conditions class A · closed · HPD violation
2026 Apr
Other conditions class B · closed · HPD violation
2025 Nov
Smoke or CO detectorsApt 1L class B · closed · HPD violation
2025 Nov
Smoke or CO detectorsApt 1L class B · closed · HPD violation
2025 Nov
Other conditionsApt 1L class C · closed · HPD violation
Show 11 more
2025 Oct
Doors or windowsApt 2L complaint
2025 Oct
Doors or windows, safetyApt 1L complaint
2025 Jul
Safety complaint
2025 Jul
Outside the building complaint
2025 Jul
Doors or windowsApt 3R complaint
2024 May
Paint or plaster complaint
2024 May
Paint or plasterApt 1R complaint
2024 May
Doors or windowsApt 2L complaint
2024 Apr
Doors or windows, safetyApt 3R complaint
2020 Jul
Boiler equipment permit
2009 May
Other conditionsApt 1R class C · paperwork · never closed · HPD violation
  • HPD violationsfound0 open. Also 1 older record from 2009 never closed. 25 further violations from 2025–2026 were closed. 438 violations on record in all, 2009–2026 — the 67 most recent are listed here

Nothing on record

Gasno record
  • Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published
Energyno record
  • Energynot requiredNot required: energy reporting applies to buildings over 25,000 sq ft
ElevatorsNot applicable
  • Elevatorsnot requiredNo elevators registered to this building

Sources

23 datasets

FEMA

NYC DCP

NYC DEP

NYC DEP / Mayor's Office

NYC DOB

NYC DOB / Mayor's Office

NYC HPD

NYC OTI

NYC Rent Guidelines Board / NYS HCR

Each date is when we last checked that dataset, not when the record itself was created.