Building health · BROOKLYN, NY

401 45 St

built 1935 · 4 stories · 6 apartments
Also known as 4423 4 Ave — one building, several doors.
Registered with the city: Tristar Management Associates LLC · 45 other buildings here list it; 4423 4th Avenue Assets LLC; WINFINITEC LLC

Apartments named in these records

5 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.

Electrical

Issues on record

Heat and hot water

Issues on record · 3 complaints, 2026
Heat source

Boiler burning natural gas (H.B. Smith 19HE-4), registration expired since Dec 2021

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 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 2005

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

3 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

Issues on record · 3 complaints, 2024–2026 · 2 in the past year

Pests and cleanliness

Issues on record (2024) · 2 complaints, 2024–2026 · 1 in the past year

Fire and safety

2 resolved since 2026

Structure and facade

Older records on file

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

General condition and all records

HPD violations

10 open: 10 about building conditions — heat or hot water (6), electrical (2), leaks (1), mold (1); 8 immediately hazardous (class C). 25 further violations from 2026 were closed. 112 violations on record in all, 2013–2026 — the 92 most recent are listed here

2026 Apr
ElectricalApt 3L class B
2026 Apr
Fire safety class C · closed
2026 Apr
ElectricalApt 3L class B · closed
2026 Apr
Walls, floors and stairsApt 3L class B · closed
2026 Apr
PlumbingApt 3L class C · closed
2026 Apr
Heat or hot waterApt 3L class C · closed
2026 Apr
PestsApt 3L class C · closed
2026 Apr
Walls, floors and stairsApt 3L class B · closed
Show 27 more
2026 Apr
LeaksApt 3L class C · closed
2026 Apr
LeaksApt 3L class C · closed
2026 Mar
Heat or hot waterApt 1F class C
2026 Mar
LeaksApt 1F class C
2026 Mar
Smoke or CO detectorsApt 1F class B · closed
2026 Mar
Smoke or CO detectorsApt 1F class B · closed
2026 Mar
PestsApt 1F class C · closed
2026 Mar
MoldApt 1F class A · closed
2026 Mar
LeaksApt 1F class C · closed
2026 Mar
Walls, floors and stairsApt 1F class C · closed
2026 Mar
Walls, floors and stairsApt 1F class B · closed
2026 Mar
Doors and windowsApt 1F class B · closed
2026 Mar
Walls, floors and stairsApt 1F class B · closed
2026 Mar
Doors and windowsApt 1F class B · closed
2026 Mar
Walls, floors and stairsApt 1F class B · closed
2026 Mar
Doors and windowsApt 1F class B · closed
2026 Mar
Heat or hot waterApt 3R class C
2026 Mar
Heat or hot waterApt 3R class C
2026 Mar
Heat or hot waterApt 3L class C
2026 Mar
Heat or hot waterApt 3L class C
2026 Mar
Fire safetyApt 3R class C · closed
2026 Mar
Walls, floors and stairsApt 3R class B · closed
2026 Mar
MoldApt 3L class B · closed
2026 Mar
LeaksApt 3L class B · closed
2024 Oct
MoldApt 3F class B
2024 May
Heat or hot waterApt 2F class C
2023 Nov
ElectricalApt 2F class C
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

1 open: 1 about building conditions

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

17 permits since 1990

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

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

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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