Building health · BROOKLYN, NY

902 41 St

built 1929 · 4 stories · 45 apartments
Also known as 4109 9 Ave — one building, several doors.
Registered with the city: 902 REALTY ASSOCIATES LLC

Apartments named in these records

8 of this building’s 45 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.

Water and pipes

Issues on record

Heat and hot water

Issues on record, most recently 2024
Heat source

Boiler burning No. 4 oil (Kewanee #414 KEWANEE #414), registration cancelled since Jan 1900

Clean Air Tracking System (boiler registrations), as of 2026-10-21 · 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 2026-10-20 · See the boiler filings at DOB →
What this counts

Accepted annual boiler inspection filings, any date

  • Boiler work permitsno recordNo boiler work permits on record
  • Heat and hot water complaintsfound0 heat or hot water complaints

Pests and cleanliness

Issues on record, most recently 2024

Fire and safety

2 resolved since 2024

Structure and facade

Older records on file
What has happened here
2024 Oct
Doors and windowsApt C3 class B · closed · HPD violation
2024 Oct
Doors and windowsApt C3 class B · closed · HPD violation
2024 Oct
Doors and windowsApt C3 class C · closed · HPD violation
2024 Oct
Doors and windowsApt C3 class B · closed · HPD violation
2024 Oct
Walls, floors and stairsApt C3 class B · closed · HPD violation
2024 Sep
Doors and windows class B · closed · HPD violation
Show 22 more
2024 Sep
Walls, floors and stairsApt B7 class A · closed · HPD violation
2024 Sep
Doors and windowsApt B7 class B · closed · HPD violation
2024 Sep
Doors and windowsApt B7 class B · closed · HPD violation
2024 Aug
Doors and windowsApt B7 class B · closed · HPD violation
2024 Aug
Walls, floors and stairsApt B7 class B · closed · HPD violation
2024 Aug
Doors and windowsApt B7 class B · closed · HPD violation
2024 Aug
Doors and windowsApt B7 class B · closed · HPD violation
2017 Oct
Doors and windowsApt D1 class C · HPD violation
2017 Oct
Doors and windowsApt D1 class C · HPD violation
2017 Aug
General construction permit
2017 Feb
Construction DOB violation
2015 May
Doors and windowsApt B7 class C · never closed · HPD violation
2014 May
Walls, floors and stairsApt C4 class A · never closed · HPD violation
2014 May
Walls, floors and stairsApt C4 class A · never closed · HPD violation
2014 May
Walls, floors and stairsApt C4 class A · never closed · HPD violation
2014 May
Walls, floors and stairsApt C4 class A · never closed · HPD violation
2012 Jan
Walls, floors and stairs class A · never closed · HPD violation
2012 Jan
Walls, floors and stairsApt D8 class A · never closed · HPD violation
2012 Jan
Doors and windowsApt D8 class A · never closed · HPD violation
2012 Jan
Walls, floors and stairsApt D8 class A · never closed · HPD violation
2011 Jun
Doors and windows class C · never closed · HPD violation
2010 Oct
Walls, floors and stairs class A · never closed · HPD violation
  • Facade ratingnot requiredNot required: facade inspections apply only to buildings taller than 6 stories
  • Sidewalk shed and scaffoldingfoundNo active shed permit; permits since Jul 2017, last expired Jul 2018
  • 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

  • BasementfoundNo basement

Rent and tenancy

On the state list
Rent stabilizationWhole tax lot

On the state's list of buildings with at least one rent-stabilized apartment (2024 registrations); listed for this tax lot (1 addresses), not under this building's address

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

ENERGY STAR score 51 (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

8 open: 8 about building conditions — pests (5), doors and windows (2), mold (1); 6 immediately hazardous (class C). Also 14 older records from 2003–2015 never closed. 25 further violations from 2024–2026 were closed. 200 violations on record in all, 1990–2026 — the 64 most recent are listed here

2026 May
Pests class A · paperwork · closed
2025 Jun
Pests class A · paperwork · closed
2024 Oct
Doors and windowsApt C3 class B · closed
2024 Oct
Doors and windowsApt C3 class B · closed
2024 Oct
PestsApt C3 class C · closed
2024 Oct
Doors and windowsApt C3 class C · closed
2024 Oct
Smoke or CO detectorsApt C3 class B · closed
2024 Oct
Smoke or CO detectorsApt C3 class B · closed
Show 39 more
2024 Oct
Doors and windowsApt C3 class B · closed
2024 Oct
Walls, floors and stairsApt C3 class B · closed
2024 Oct
LeaksApt C3 class B · closed
2024 Sep
Doors and windows class B · closed
2024 Sep
Fire safety class C · closed
2024 Sep
Other conditions class B · closed
2024 Sep
Fire safety class C · closed
2024 Sep
Walls, floors and stairsApt B7 class A · closed
2024 Sep
LeaksApt B7 class A · closed
2024 Sep
Doors and windowsApt B7 class B · closed
2024 Sep
MoldApt B7 class A · closed
2024 Sep
Doors and windowsApt B7 class B · closed
2024 Aug
PestsApt B7 class C
2024 Aug
Doors and windowsApt B7 class B · closed
2024 Aug
LeaksApt B7 class B · closed
2024 Aug
Walls, floors and stairsApt B7 class B · closed
2024 Aug
Doors and windowsApt B7 class B · closed
2024 Aug
Doors and windowsApt B7 class B · closed
2024 Jul
PestsApt B7 class C
2019 Apr
PestsApt B6 class C
2019 Apr
PestsApt B6 class C
2017 Oct
Doors and windowsApt D1 class C
2017 Oct
Doors and windowsApt D1 class C
2017 Oct
MoldApt B6 class B
2017 Oct
PestsApt B6 class B
2015 May
Doors and windowsApt B7 class C · never closed
2014 May
Walls, floors and stairsApt C4 class A · never closed
2014 May
Walls, floors and stairsApt C4 class A · never closed
2014 May
Walls, floors and stairsApt C4 class A · never closed
2014 May
Walls, floors and stairsApt C4 class A · never closed
2012 Jan
Walls, floors and stairs class A · never closed
2012 Jan
Walls, floors and stairsApt D8 class A · never closed
2012 Jan
Doors and windowsApt D8 class A · never closed
2012 Jan
Heat or hot waterApt D8 class A · never closed
2012 Jan
Walls, floors and stairsApt D8 class A · never closed
2011 Jun
Doors and windows class C · never closed
2010 Oct
Walls, floors and stairs class A · never closed
2003 Jul
Smoke or CO detectorsApt A2 class B · never closed
2003 Jul
PestsApt A2 class B · never closed
Housing Maintenance Code Violations, as of 2026-10-20 · 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

7 open: 2 about building conditions, 5 about filings or paperwork

DOB Violations, as of 2026-10-20 · 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

2 permits since 1990

DOB NOW: Build – Approved Permits, as of 2026-10-20 · See every permit at DOB →
What this counts

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

  • Resident complaints to the cityfoundno complaints. None in the last 2 years, but 13 earlier complaints on record from 2024

Nothing on record

Gasno record
  • Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published
ElevatorsNot applicable
  • Elevatorsnot requiredNo elevators registered to this building

Sources

23 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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