421 Troy Ave

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 2026-10-21

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

Elevators

No issues on record

Elevators

1 active elevator; latest periodic inspection Sep 2025

DOB NOW Elevator Safety Compliance, as of 2026-10-21 · See this building's elevators on NYC Open Data →

What this counts

Active elevator devices registered to this building ID

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

Energy

ENERGY STAR score 64 (2023 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

58 open: 58 about building conditions — walls, floors and stairs (18), doors and windows (10), heat or hot water (6), leaks (6); 13 immediately hazardous (class C). Also 2 older records from 2013–2015 never closed. 25 further violations from 2025 were closed. 234 violations on record in all, 2012–2025 — the 159 most recent are listed here

2025 Oct

Heat or hot water class C · closed

2025 Oct

Fire safetyApt 6D class C · closed

2025 Oct

Doors and windowsApt 6D class C · closed

2025 Oct

Walls, floors and stairsApt 6D class B · closed

2025 Oct

PlumbingApt 6D class B · closed

2025 Oct

MoldApt 6D class A · closed

2025 Oct

Heat or hot waterApt 6D class C · closed

2025 Oct

MoldApt 3A class B

Show 42 more

2025 Oct

Doors and windowsApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

Heat or hot waterApt 3A class A

2025 Oct

Doors and windowsApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

Doors and windowsApt 3A class A

2025 Oct

Fire safetyApt 3A class C

Walls, floors and stairsApt 3A class A

2025 Oct

LeaksApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

LeaksApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

Doors and windowsApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

LeaksApt 3A class A

2025 Oct

Walls, floors and stairsApt 3A class A

2025 Oct

LeaksApt 3A class A

2025 Oct

Heat or hot waterApt 3A class A

2025 Oct

Doors and windowsApt 3A class A

2025 Oct

Doors and windowsApt 3A class A · closed

2025 Oct

Walls, floors and stairsApt 3A class A · closed

2025 Oct

Doors and windowsApt 3A class A · closed

2025 Oct

Lead-based paintApt 3A class C · closed

2025 Oct

Lead-based paintApt 3A class C · closed

2025 Oct

Lead-based paintApt 3A class C · closed

2025 Oct

Lead-based paintApt 3A class C · closed

2025 Oct

Lead-based paintApt 3A class C · closed

2025 Oct

Walls, floors and stairs class B · closed

2025 Oct

Walls, floors and stairs class B · closed

2025 Oct

Other conditions class B · closed

2025 Oct

Fire safetyApt 3A class B · closed

2025 Oct

PlumbingApt 3A class B · closed

2025 Oct

Walls, floors and stairsApt 3A class B · closed

2025 Oct

Doors and windowsApt 3A class C · closed

2025 Oct

Walls, floors and stairsApt 3A class B · closed

2025 Oct

Doors and windowsApt 3A class B · closed

2025 Oct

Fire safetyApt 3A class C · closed

2025 Feb

Heat or hot water class C

and 10 more at the source

Housing Maintenance Code Violations, as of 2026-10-21 · 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

2 open: 2 about filings or paperwork

2025 Sep

EN-BENCH Benchmarking - LL84

1993 Aug

Local Law 62/91 - Boilers never closed

DOB Violations, as of 2026-10-21 · 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

61 heat or hot water, 2 paint or plaster, 2 pests, 2 plumbing, 1 appliances, 1 doors or windows, 1 floors or stairs, 1 general repairs, 1 leaks, 1 mold

2026 Oct

General repairsApt 3B

Heat or hot waterApt 6F

2025 Oct

Heat or hot waterApt 6D

Show 74 more

2025 Oct

Floors or stairs, paint or plaster, plumbing, leaksApt 3A

2025 Aug

Plumbing, moldApt BASEME

Heat or hot waterApt 4D

Heat or hot waterApt 5B

2025 Jan

Heat or hot water

2025 Jan

Heat or hot waterApt 5B

Heat or hot waterApt 1D

Doors or windows, heat or hot water, paint or plaster, pestsApt 4F

Heat or hot waterApt 3D

Heat or hot waterApt 3D

Heat or hot waterApt 2B

Paint or plasterApt B

Appliances, doors or windows, floors or stairs, general repairs, paint or plasterApt 6D

2024 Feb

Heat or hot water

2024 Feb

Floors or stairs, plumbing, pestsApt 5D

Floors or stairs, paint or plaster, plumbingApt BASEME

Housing Maintenance Code Complaints and Problems, as of 2026-10-21 · 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

3 permits since 1990

2020 Jun

General construction permit

1996 Jul

Plumbing permit, Fuel burning permit

and 1 more at the source

DOB NOW: Build – Approved Permits, as of 2026-10-21 · 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 Oct

General repairsApt 3B complaint

2025 Oct

Other conditions class B · closed · HPD violation

2025 Oct

Floors or stairs, paint or plasterApt 3A complaint

2025 Sep

EN-BENCH Benchmarking - LL84 DOB violation

2024 Dec

Doors or windows, paint or plasterApt 4F complaint

2024 Dec

AppliancesApt 3D complaint

Show 4 more

2024 Mar

Paint or plasterApt B complaint

2024 Feb

Appliances, doors or windows, floors or stairs, general repairs, paint or plasterApt 6D complaint

2024 Feb

Floors or stairsApt 5D complaint

2023 Oct

Floors or stairs, paint or plasterApt BASEME complaint

Salesno recordNo recorded sale since 2016

Nothing on record

Gasno record

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

Sources

24 datasets

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

Every row shows the record it came from and the date it was last checked.

These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.
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Apartments named in these records

Heat and hot water

Water and pipes

Pests and cleanliness

Fire and safety

Structure and facade

Flooding

Elevators

Rent and tenancy

Energy

General condition and all records

Nothing on record

Sources

FEMA

NYC DCP

NYC DEP

NYC DEP / Mayor's Office

NYC DOB

NYC DOB / Mayor's Office

NYC DOF

NYC HPD

NYC OTI

NYC Rent Guidelines Board / NYS HCR