Building health · BROOKLYN, NY

848 Madison St

built 1931 · 4 stories · 8 apartments
Registered with the city: GUARDIUM MANAGEMENT LLC; 848 MADISON ST LLC; MADISON 848 REALTY LLC

Apartments named in these records

5 of this building’s 8 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.

Fire and safety

Issues on record

Structure and facade

Issues on record

Flooding

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: Nuisance flooding (4 in. to 1 ft); 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

Heat and hot water

Issues on record · 1 complaint, 2025
Heat source

Boiler burning natural gas (Weil Mclain 3'*4.6' 26X26 H-7 WEIL MCLAIN 3'*4.6' 26X26 H-7), registration expired since Jul 1992

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

1 heat or hot water complaint

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)

  • Boiler inspection filingsno recordNo boiler filings under this building's ID
  • Boiler work permitsno recordNo boiler work permits on record

Water and pipes

Issues on record (2025) · 3 complaints, 2025–2026 · 2 in the past year

Pests and cleanliness

Issues on record · 6 complaints, 2025–2026 · 4 in the past year

Electrical

1 complaint, 2025

General condition and all records

HPD violations

17 open: 16 about building conditions — walls, floors and stairs (4), doors and windows (3), leaks (2), pests (2); 3 immediately hazardous (class C), 1 about paperwork or notices. 21 further violations from 2024–2026 were closed. 117 violations on record in all, 1982–2026 — the 38 most recent are listed here

2026 Jul
Other conditions class A
2026 Jun
Fire safetyApt 4L class C
2026 May
Walls, floors and stairsApt 1R class A
2026 May
Walls, floors and stairsApt 1R class A
2026 May
Doors and windowsApt 1R class B
2026 May
PestsApt 1R class C
2026 May
Fire safetyApt 1R class C · closed
2026 Mar
MoldApt 4L class B
Show 30 more
2026 Mar
Walls, floors and stairsApt 4L class B
2026 Mar
Smoke or CO detectorsApt 4L class B
2026 Mar
Smoke or CO detectorsApt 4L class B
2026 Mar
Doors and windowsApt 4L class B
2026 Mar
Doors and windowsApt 4L class B
2026 Mar
LeaksApt 4L class B · closed
2026 Mar
Fire safetyApt 4L class C · closed
2026 Mar
Walls, floors and stairsApt 4L class B · closed
2026 Mar
LeaksApt 4L class B · closed
2026 Mar
LeaksApt 4L class B · closed
2026 Mar
MoldApt 4L class A · closed
2025 Dec
Fire safetyApt 1R class C · closed
2025 Dec
PestsApt 1R class C · closed
2025 Nov
Other conditions class I · paperwork · closed
2025 Sep
Walls, floors and stairsApt 3R class A
2025 Sep
LeaksApt 3R class B
2025 Sep
LeaksApt 3R class B
2025 Sep
PestsApt 3R class C
2025 Sep
Walls, floors and stairsApt 3R class A · closed
2025 Jun
Pests class A · paperwork · closed
2024 Nov
Other conditions class I · paperwork · closed
2024 Sep
Heat or hot water class C · paperwork
2024 Sep
Leaks class A · closed
2024 Sep
Smoke or CO detectors class A · closed
2024 Sep
Walls, floors and stairs class A · paperwork · closed
2024 Sep
Smoke or CO detectors class A · closed
2024 Sep
Walls, floors and stairs class A · closed
2024 Sep
Walls, floors and stairs class A · closed
2024 Sep
Fire safety class B · closed
2024 Sep
Pests class C · 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

Resident complaints to the city

3 mold, 3 pests, 2 appliances, 2 doors or windows, 2 floors or stairs, 2 leaks, 2 paint or plaster, 1 electrical, 1 general repairs, 1 heat or hot water, 1 outside the building, 1 plumbing

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

2 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

Rent and tenancyNot on the state list
  • Rent stabilizationno recordNot on the state's 2024 list. Owners who register late or not at all are missing, so ask HCR about a specific apartment
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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