Building record from city data · BROOKLYN, NY

831 Madison St

Printed 2026-10-21 from blueflo.tech/b/831-madison-street-brooklyn, where it is kept current. These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Not a warranty. May not be used for tenant screening (terms of use).

built 1925 · 4 stories · 39 apartments · BIN 3039671 · BBL 3014810059

Worth knowing
1 open immediately hazardous (class C) HPD violation about walls, floors and stairs
Source: Housing Maintenance Code Violations · as of 2026-10-19
Worth knowing
Also on record
Clean in the records
Registered with the city

MADISON REALTY LLC, 831 MADISON REALTY LLC

Heat or hot water: 12 reports to the city since 2024
2024Heat or hot water · Oct 2024 · 1 report (1 complaint)Oct 16, 2024Heat or hot water · Nov 2024 · 1 report (3 complaints)Nov 22, 2024Nov 22, 2024 (2nd)Nov 22, 2024 (3rd)
2025Heat or hot water · Jan 2025 · 1 report (3 complaints)Jan 15, 2025Jan 20, 2025Jan 21, 2025Heat or hot water · Feb 2025 · 2 reports (3 complaints)Feb 7, 2025Feb 21, 2025Feb 23, 2025Heat or hot water · Oct 2025 · 1 report (1 complaint)Oct 26, 2025Heat or hot water · Nov 2025 · 3 reports (3 complaints)Nov 4, 2025Nov 15, 2025Nov 23, 2025Heat or hot water · Dec 2025 · 1 report (1 complaint)Dec 3, 2025
2026Heat or hot water · May 2026 · 1 report (1 complaint)May 1, 2026Heat or hot water · Oct 2026 · 1 report (3 complaints)Oct 17, 2026Oct 18, 2026Oct 19, 2026
Source: HPD Complaints and Problems · as of 2026-10-21

Also reported

2024 – 2026

A filled month had a report to HPD; darker means more than one, and the past year is brightest. Tap one to read it. Complaints within a week count as one report. Records list complaints filed, not conditions found.

Apartments named in these records

11 of this building’s 39 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.

Structure and facade

Issues on record

Heat and hot water

Issues on record · 18 complaints, 2024–2026 · 9 in the past year
Heat source

Boiler burning No. 2 oil (Rockmills MP-60), registration current since Sep 2023

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 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

Heat and hot water complaints

6 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)

  • Boiler work permitsno recordNo boiler work permits on record

Water and pipes

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

Pests and cleanliness

5 complaints, 2024–2026 · 3 in the past year

Fire and safety

3 resolved since 2025

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

Energy

Energy

ENERGY STAR score 46 (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

9 open: 9 about building conditions — walls, floors and stairs (3), leaks (2), smoke or CO detectors (2), doors and windows (1); 1 immediately hazardous (class C). 19 further violations from 2024–2026 were closed. 205 violations on record in all, 1996–2026 — the 28 most recent are listed here

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

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

  • DOB violationsfound0 open

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.