Building record from city data · BROOKLYN, NY

851 Dekalb Ave

Printed 2026-10-21 from blueflo.tech/b/851-dekalb-avenue-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 1931 · 4 stories · 6 apartments · BIN 3049586 · BBL 3017770064

Worth knowing
City records list the water service line as lead
Source: Lead Service Line Location Coordinates · as of 2026-01-30
Worth knowing
Also on record
Clean in the records
Registered with the city

851 DEKALB LLC

Mold: 4 reports to the city since 2024
2024
2025Mold · Jan 2025 · 1 report (1 complaint)Jan 11, 2025Mold · Aug 2025 · 1 report (1 complaint)Aug 5, 2025Mold · Sep 2025 · 1 report (1 complaint)Sep 2, 2025
2026Mold · Jul 2026 · 1 report (2 complaints)Jul 4, 2026Jul 7, 2026
Source: HPD Complaints and Problems · as of 2026-10-20

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

Apt 2R 10Apt 3L 44Apt 3R 16

3 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.

Flooding

Issues on record
FEMA flood zone

Outside FEMA's 1% annual-chance flood zone: X

FEMA National Flood Hazard Layer, as of 2026-10-21
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

1 complaint, 2025
What has happened here
2025 Jan
Heat or hot waterApt 3R complaint
2023 Dec
Heat or hot waterApt 2R complaint
Boiler inspection filings

Latest accepted inspection Sep 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

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

Water and pipes

Issues on record · 6 complaints, 2025–2026 · 1 in the past year
What has happened here
2026 Jul
Leaks class A · closed · HPD violation
2026 May
Plumbing complaint
2025 Sep
Leaks class A · closed · HPD violation
2025 Sep
Leaks class B · closed · HPD violation
2025 Sep
PlumbingApt 3L class B · closed · HPD violation
2025 Sep
PlumbingApt 3L complaint
Show 7 more
2025 Sep
PlumbingApt 3L complaint
2025 Aug
PlumbingApt 3L complaint
2025 Aug
PlumbingApt 3L complaint
2025 Aug
PlumbingApt 3L complaint
2023 Dec
LeaksApt 2R complaint
2023 Dec
LeaksApt 2R complaint
2023 Dec
LeaksApt 2R complaint
Water service line

Lead (records)

Lead Service Line Location Coordinates, as of 2026-01-30

Pests and cleanliness

Issues on record (2025) · 5 complaints, 2025–2026 · 2 in the past year
What has happened here
2026 Jul
Mold, pestsApt 3R complaint
2026 Jul
Mold, pestsApt 3R complaint
2025 Sep
MoldApt 3L class B · HPD violation
2025 Sep
Mold, pestsApt 3L complaint
2025 Aug
Mold, pestsApt 3L complaint
2025 Jan
MoldApt 3R complaint
Show 5 more
2023 Nov
PestsApt 2R complaint
2023 Nov
PestsApt 2R complaint
2023 Nov
PestsApt 2R complaint
2023 Nov
PestsApt 2R complaint
2023 Oct
PestsApt 2R complaint

Fire and safety

Older records on file
What has happened here
2026 Jul
Fire safetyApt 3R class C · closed · HPD violation
2026 Jul
Fire safetyApt 3R class C · closed · HPD violation
2026 Jul
Fire safetyApt 3R class C · closed · HPD violation
2025 Sep
Fire safety class B · closed · HPD violation
2007 Jul
Fire safety class B · never closed · HPD violation

Electrical

2 complaints, 2025
What has happened here
2025 Sep
ElectricalApt 3L class B · closed · HPD violation
2025 Sep
ElectricalApt 3L complaint
2025 Aug
ElectricalApt 3L complaint

Structure and facade

Older records on file
What has happened here
2026 Jul
Doors and windowsApt 3R class B · closed · HPD violation
2025 Sep
Walls, floors and stairs class A · closed · HPD violation
2025 Sep
Walls, floors and stairsApt 3L class B · closed · HPD violation
2025 Sep
Walls, floors and stairsApt 3L class B · closed · HPD violation
2025 Sep
Doors and windowsApt 3L class B · closed · HPD violation
2025 Sep
Walls, floors and stairsApt 3L class B · closed · HPD violation
Show 3 more
2025 Sep
Walls, floors and stairsApt 3L class B · closed · HPD violation
2020 Nov
Walls, floors and stairs class A · HPD violation
2020 Nov
Walls, floors and stairs class A · HPD violation
  • 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

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

3 open: 3 about building conditions — walls, floors and stairs (2), mold (1). Also 1 older record from 2007 never closed. 25 further violations from 2025–2026 were closed. 108 violations on record in all, 2005–2026 — the 42 most recent are listed here

2026 Jul
Fire safetyApt 3R class C · closed
2026 Jul
Fire safetyApt 3R class C · closed
2026 Jul
Other conditions class A · closed
2026 Jul
Leaks class A · closed
2026 Jul
Fire safetyApt 3R class C · closed
2026 Jul
Smoke or CO detectorsApt 3R class B · closed
2026 Jul
Smoke or CO detectorsApt 3R class B · closed
2026 Jul
Doors and windowsApt 3R class B · closed
Show 21 more
2025 Sep
Smoke or CO detectorsApt 3L class B · closed
2025 Sep
Smoke or CO detectorsApt 3L class B · closed
2025 Sep
Leaks class A · closed
2025 Sep
Smoke or CO detectorsApt 3R class B · closed
2025 Sep
Smoke or CO detectorsApt 3R class B · closed
2025 Sep
MoldApt 3L class B
2025 Sep
Walls, floors and stairs class A · closed
2025 Sep
Fire safety class B · closed
2025 Sep
Leaks class B · closed
2025 Sep
ElectricalApt 3L class B · closed
2025 Sep
Other conditionsApt 3L class B · closed
2025 Sep
Walls, floors and stairsApt 3L class B · closed
2025 Sep
Walls, floors and stairsApt 3L class B · closed
2025 Sep
Doors and windowsApt 3L class B · closed
2025 Sep
Walls, floors and stairsApt 3L class B · closed
2025 Sep
Walls, floors and stairsApt 3L class B · closed
2025 Sep
PlumbingApt 3L class B · closed
2025 Sep
Smoke or CO detectorsApt 3L class B · closed
2020 Nov
Walls, floors and stairs class A
2020 Nov
Walls, floors and stairs class A
2007 Jul
Fire safety 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

Everything else on record
2026 Jul
Other conditions class A · closed · HPD violation
2026 Jul
Smoke or CO detectorsApt 3R class B · closed · HPD violation
2026 Jul
Smoke or CO detectorsApt 3R class B · closed · HPD violation
2026 Jul
Doors or windowsApt 3R complaint
2026 Jul
Doors or windowsApt 3R complaint
2025 Sep
Smoke or CO detectorsApt 3L class B · closed · HPD violation
Show 14 more
2025 Sep
Smoke or CO detectorsApt 3L class B · closed · HPD violation
2025 Sep
Smoke or CO detectorsApt 3R class B · closed · HPD violation
2025 Sep
Smoke or CO detectorsApt 3R class B · closed · HPD violation
2025 Sep
Other conditionsApt 3L class B · closed · HPD violation
2025 Sep
Smoke or CO detectorsApt 3L class B · closed · HPD violation
2025 Sep
Floors or stairs, outside the buildingApt 3L complaint
2025 Sep
General repairsApt 3L complaint
2025 Sep
Doors or windows, floors or stairs, paint or plasterApt 3L complaint
2025 Sep
Doors or windows, paint or plasterApt 3L complaint
2025 Aug
Floors or stairs, outside the buildingApt 3L complaint
2025 Aug
General repairsApt 3L complaint
2025 Aug
Doors or windows, floors or stairs, paint or plasterApt 3L complaint
2025 Aug
Doors or windows, paint or plasterApt 3L complaint
2023 Dec
General repairsApt 2R complaint
  • DOB violationsfound0 open
  • Permit historyno record0 permits since 1990

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

FEMA

NYC DCP

NYC DEP

NYC DEP / Mayor's Office

NYC DOB

NYC DOB / Mayor's Office

NYC HPD

NYC OTI

NYC Rent Guidelines Board / NYS HCR

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