424 Troy Ave

Heat or hot waterApt B2 complaint

Heat or hot waterApt B2 complaint

Show 12 more

Heat or hot waterApt B2 complaint

LeaksApt C6 class B · HPD violation

Heat source

Boiler burning natural gas (Supreme D3-70-5), registration current since Oct 2024

Clean Air Tracking System (boiler registrations), as of 2026-10-20 · See this building's boiler registrations on NYC Open Data →

Boiler inspection filings

Latest accepted inspection Feb 2026, 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 2021

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

2 heat or hot water complaints

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)

Water and pipes

Older records on file

What has happened here

LeaksApt C6 class B · HPD violation

1998 Aug

Plumbing permit

Water service line

Non-Lead (records)

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

Pests and cleanliness

Issues on record (2024) · 1 complaint, 2024

What has happened here

MoldApt B2 complaint

PestsApt C12A class C · HPD violation

MoldApt C6 class B · HPD violation

Fire and safety

Issues on record, most recently 2024

What has happened here

Lead-based paintApt C12 class B · paperwork · closed · HPD violation

Lead-based paintApt C10 class B · paperwork · closed · HPD violation

Lead-based paintApt C9 class B · paperwork · closed · HPD violation

Lead-based paintApt C6 class B · paperwork · closed · HPD violation

Lead-based paintApt C2 class B · paperwork · closed · HPD violation

Lead-based paintApt B16 class B · paperwork · closed · HPD violation

Show 19 more

Lead-based paintApt B15 class B · paperwork · closed · HPD violation

Lead-based paintApt B4 class B · paperwork · closed · HPD violation

Lead-based paintApt A4 class B · paperwork · closed · HPD violation

Lead-based paint class C · paperwork · HPD violation

Lead-based paint class C · paperwork · HPD violation

Fire safety class B · closed · HPD violation

Fire safety class B · closed · HPD violation

Fire safetyApt B14 class C · closed · HPD violation

Lead-based paintApt C12A class C · paperwork · HPD violation

Lead-based paintApt C12A class C · closed · HPD violation

Lead-based paintApt C12A class C · closed · HPD violation

Lead-based paintApt C12A class C · closed · HPD violation

2021 Mar

Fire safetyApt C6 class C · HPD violation

Electrical

Older records on file

What has happened here

ElectricalApt C6 class B · HPD violation

Structure and facade

Issues on record, most recently 2024

What has happened here

2025 Jan

Walls, floors and stairs class B · closed · HPD violation

Walls, floors and stairs class A · closed · HPD violation

Walls, floors and stairs class A · closed · HPD violation

Walls, floors and stairsApt C12A class B · HPD violation

Walls, floors and stairsApt C12A class B · HPD violation

Walls, floors and stairsApt C12A class B · HPD violation

Show 10 more

Doors and windowsApt C12A class A · closed · HPD violation

Doors and windowsApt C12A class A · closed · HPD violation

Doors and windowsApt C12A class A · closed · HPD violation

Doors and windowsApt C12A class A · closed · HPD violation

2021 Jun

Walls, floors and stairs class C · HPD violation

2021 Feb

Walls, floors and stairsApt A8 class B · HPD violation

Walls, floors and stairsApt C6 class B · HPD violation

Walls, floors and stairsApt C6 class B · HPD violation

Doors and windowsApt C6 class B · HPD violation

1998 Aug

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

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

Gas

What has happened here

GasApt C12A class B · HPD violation

Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published

Energy

ENERGY STAR score 40 (2024 report)

Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25

What this counts

Letter grades are issued by the city under Local Law 33 and posted near the building entrance; Blueflo shows the reported score only

General condition and all records

HPD violations

50 open: 45 about building conditions — walls, floors and stairs (16), lead-based paint (6), doors and windows (4), electrical (4); 10 immediately hazardous (class C), 5 about paperwork or notices. Also 3 older records from 1993–2014 never closed. 25 further violations from 2024–2026 were closed. 260 violations on record in all, 1988–2026 — the 82 most recent are listed here

Lead-based paintApt C12 class B · paperwork · closed

Lead-based paintApt C10 class B · paperwork · closed

Lead-based paintApt C9 class B · paperwork · closed

Lead-based paintApt C6 class B · paperwork · closed

Lead-based paintApt C2 class B · paperwork · closed

Lead-based paintApt B16 class B · paperwork · closed

Lead-based paintApt B15 class B · paperwork · closed

Lead-based paintApt B4 class B · paperwork · closed

Show 42 more

Lead-based paintApt A4 class B · paperwork · closed

Lead-based paint class C · paperwork

Lead-based paint class C · paperwork

2025 Jan

Walls, floors and stairs class B · closed

Other conditionsApt B14 class B · closed

Walls, floors and stairs class A · closed

Fire safety class B · closed

Walls, floors and stairs class A · closed

Fire safety class B · closed

Fire safetyApt B14 class C · closed

Smoke or CO detectorsApt B14 class B · closed

Smoke or CO detectorsApt B14 class B · closed

PestsApt C12A class C

Walls, floors and stairsApt C12A class B

Lead-based paintApt C12A class C · paperwork

GasApt C12A class B

Walls, floors and stairsApt C12A class B

Walls, floors and stairsApt C12A class B

Lead-based paintApt C12A class C · closed

Lead-based paintApt C12A class C · closed

Lead-based paintApt C12A class C · closed

2021 Jun

Walls, floors and stairs class C

2021 Mar

Fire safetyApt C6 class C

2021 Feb

Walls, floors and stairsApt A8 class B

MoldApt C6 class B

Other conditionsApt C6 class B

ElectricalApt C6 class B

LeaksApt C6 class B

Walls, floors and stairsApt C6 class B

LeaksApt C6 class B

Walls, floors and stairsApt C6 class B

Doors and windowsApt C6 class B

and 3 more at the source

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

Resident complaints to the city

13 heat or hot water, 1 floors or stairs, 1 mold, 1 paint or plaster

Housing Maintenance Code Complaints and Problems, as of 2026-10-20 · 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

4 permits since 1990

2021 Apr

Plumbing permit

2021 Apr

Boiler equipment permit

1998 Aug

Plumbing permit, General construction permit

and 1 more at the source

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

2025 Jan

Floors or stairs complaint

Paint or plasterApt B2 complaint

Other conditionsApt B14 class B · closed · HPD violation

Smoke or CO detectorsApt B14 class B · closed · HPD violation

Smoke or CO detectorsApt B14 class B · closed · HPD violation

Floors or stairs, paint or plasterApt B2 complaint

Show 4 more

AppliancesApt C12A complaint

Appliances, floors or stairs, paint or plaster, safetyApt C12A complaint

2021 Apr

Boiler equipment permit