421 Audubon Ave

Heat or hot waterApt 31 class C · HPD violation

Heat or hot waterApt 24 class C · closed · HPD violation

Show 129 more

Heat or hot water class C · closed · HPD violation

Heat or hot waterApt 31 class C · closed · HPD violation

Heat or hot waterApt 24 class C · HPD violation

Heat or hot water class C · closed · HPD violation

Heat or hot waterApt 24 class C · HPD violation

Heat or hot waterApt 24 class C · closed · HPD violation

Heat or hot waterApt 24 class C · closed · HPD violation

Heat or hot waterApt 24 class C · HPD violation

Heat or hot waterApt 21 class C · closed · HPD violation

Heat or hot water class C · closed · HPD violation

Heat or hot waterApt 21 complaint

Heat or hot waterApt 24 class C · closed · HPD violation

Heat or hot waterApt 53 complaint

Heat or hot waterApt 31 complaint

Low Pressure Boiler DOB violation

2023 Jun

2019 Apr

Boiler permit

Heat source

Boiler burning natural gas (H.B. Smith 19HE-8), registration expired since Jul 2019

Clean Air Tracking System (boiler registrations), as of 2026-10-19 · See this building's boiler registrations on NYC Open Data →

Boiler inspection filings

Latest accepted inspection Nov 2025, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-17 · See the boiler filings at DOB →

What this counts

Accepted annual boiler inspection filings, any date

Boiler work permits

Latest boiler work permit 2019 (2 on record)

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

18 heat or hot water complaints

Housing Maintenance Code Complaints and Problems, as of 2026-10-19 · See the complaints at HPD Online →

What this counts

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

Water and pipes

4 complaints, 2024–2025

What has happened here

Plumbing, leaksApt 24 complaint

Plumbing, leaksApt 24 complaint

Show 4 more

Water service lineWhole tax lot

Non-Lead (excavation)

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

Pests and cleanliness

Issues on record · 2 complaints, 2024–2025

What has happened here

PestsApt 3 class C · HPD violation

PestsApt 21 class C · closed · HPD violation

PestsApt 21 class C · closed · HPD violation

PestsApt 23 class C · closed · HPD violation

MoldApt 3 class B · closed · HPD violation

PestsApt 54 class C · closed · HPD violation

Show 7 more

PestsApt 3 class C · closed · HPD violation

Unsanitary conditions complaint

PestsApt 22 class C · HPD violation

MoldApt 24 complaint

2023 Aug

2023 Aug

PestsApt 22 class C · HPD violation

2021 May

PestsApt 21 class C · HPD violation

2008 May

PestsApt 44 class B · never closed · HPD violation

Fire and safety

4 resolved since 2025

What has happened here

Fire safety class C · closed · HPD violation

Fire safety class C · closed · HPD violation

Fire safety class C · closed · HPD violation

Fire safetyApt 23 class C · closed · HPD violation

Electrical

1 complaint, 2025

What has happened here

ElectricalApt 33 complaint

Flooding

No issues on record

FEMA flood zone

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

FEMA National Flood Hazard Layer, as of 2026-10-19

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

BasementWhole tax lot

Below grade

PLUTO (tax lot data), as of 2026-08-24

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

HPD violations

11 open: 11 about building conditions — heat or hot water (4), pests (4), other conditions (2), walls, floors and stairs (1); 8 immediately hazardous (class C). Also 1 older record from 2008 never closed. 25 further violations from 2025–2026 were closed. 516 violations on record in all, 1997–2026 — the 108 most recent are listed here

Walls, floors and stairsApt 32 class B

Heat or hot waterApt 31 class C

PestsApt 3 class C

Doors and windows class B · closed

Fire safety class C · closed

Walls, floors and stairsApt 31 class B · closed

Heat or hot water class C · closed

Show 29 more

Heat or hot waterApt 31 class C · closed

Heat or hot waterApt 24 class C

Heat or hot water class C · closed

Heat or hot waterApt 24 class C

Heat or hot waterApt 24 class C

PestsApt 21 class C · closed

PestsApt 21 class C · closed

Heat or hot waterApt 21 class C · closed

Heat or hot water class C · closed

Fire safety class C · closed

Doors and windowsApt 23 class B · closed

PestsApt 23 class C · closed

MoldApt 3 class B · closed

PestsApt 54 class C · closed

Fire safety class C · closed

Fire safetyApt 23 class C · closed

Walls, floors and stairsApt 22 class B · closed

Walls, floors and stairsApt 22 class B · closed

Walls, floors and stairsApt 21 class B · closed

PestsApt 3 class C · closed

2023 Sep

Other conditionsApt 21 class B

Other conditionsApt 52 class B

2008 May

PestsApt 44 class B · never closed

Housing Maintenance Code Violations, as of 2026-10-19 · Read these violations in full at HPD Online →

What this counts

Open HPD violations inspected in the last 10 years; class C = immediately hazardous. Paperwork = failure to file, notify or certify

DOB violations

6 open: 3 about building conditions, 3 older than 10 years

2023 Sep

Construction class - 3

Unknown class - 3 · never closed

2007 Oct

Construction non-hazardous · never closed

2007 Oct

Construction never closed

DOB Violations, as of 2026-10-18 · 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

Resident complaints to the city

66 heat or hot water, 4 plumbing, 3 general repairs, 2 leaks, 1 appliances, 1 doors or windows, 1 electrical, 1 mold, 1 paint or plaster, 1 safety, 1 unsanitary conditions

Show 121 more

Heat or hot waterApt 21

General repairsApt 33

Appliances, heat or hot water, plumbing, safety, leaksApt 24

ElectricalApt 33

Unsanitary conditions

Doors or windows, heat or hot waterApt 33

Heat or hot water, plumbingApt 33

PlumbingApt 33

Heat or hot waterApt 53

General repairsApt 24

General repairs, paint or plaster, plumbing, mold, leaksApt 24

General repairsApt 33

General repairsApt 24

Heat or hot water, plumbingApt 33

PlumbingApt 33

Heat or hot waterApt 31

General construction permit

Housing Maintenance Code Complaints and Problems, as of 2026-10-19 · See the complaints at HPD Online →

What this counts

HPD complaints received in the last 2 years; the list below is every complaint on record for the last three years

Permit history

13 permits since 1990

2021 Nov

Plumbing permit

2021 Nov

2019 Jun

General construction permit, Plumbing permit

2019 Apr

Boiler permit, Plumbing permit

2019 Mar

Plumbing permit, General construction permit

and 6 more at the source

DOB NOW: Build – Approved Permits, as of 2026-10-17 · 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

General repairsApt 33 complaint

Appliances, safetyApt 24 complaint

Doors or windowsApt 33 complaint

General repairsApt 24 complaint

General repairs, paint or plasterApt 24 complaint

General repairsApt 33 complaint

Show 6 more