Building record from city data · BROOKLYN, NY

170 31 St

Printed 2026-10-21 from blueflo.tech/b/170-31-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).

Also known as 849 4 Ave, 851 4 Ave, 853 4 Ave, 855 4 Ave — one building, several doors.

built 1916 · 4 stories · 20 apartments · BIN 3010017 · BBL 3006770006

Worth knowing
15 open immediately hazardous (class C) HPD violations about fire safety and heat or hot water and pests and lead-based paint
Source: Housing Maintenance Code Violations · as of 2026-10-19
Worth knowing
Also on record
Clean in the records
Registered with the city

170 31st street real estate inc.

Heat or hot water: 18 reports to the city since 2024
2024Heat or hot water · Jan 2024 · 1 report (1 complaint)Jan 26, 2024Heat or hot water · Feb 2024 · 1 report (2 complaints)Feb 12, 2024Feb 16, 2024Heat or hot water · Mar 2024 · 1 report (3 complaints)Mar 27, 2024Mar 28, 2024Apr 2, 2024Heat or hot water · Nov 2024 · 1 report (1 complaint)Nov 15, 2024Heat or hot water · Dec 2024 · 2 reports (3 complaints)Dec 7, 2024Dec 21, 2024Dec 22, 2024
2025Heat or hot water · Jan 2025 · 1 report (2 complaints)Jan 9, 2025Jan 10, 2025Heat or hot water · Feb 2025 · 1 report (2 complaints)Feb 5, 2025Feb 7, 2025Heat or hot water · Nov 2025 · 2 reports (3 complaints)Nov 17, 2025Nov 17, 2025 (2nd)Nov 28, 2025Heat or hot water · Dec 2025 · 3 reports (11 complaints)Dec 11, 2025Dec 14, 2025Dec 18, 2025Dec 22, 2025Dec 25, 2025Dec 26, 2025Dec 29, 2025Dec 30, 2025Jan 4, 2026Jan 5, 2026Jan 6, 2026
2026Heat or hot water · Jan 2026 · 3 reports (8 complaints)Jan 10, 2026Jan 12, 2026Jan 16, 2026Jan 18, 2026Jan 19, 2026Jan 26, 2026Jan 30, 2026Feb 2, 2026Heat or hot water · Feb 2026 · 1 report (2 complaints)Feb 9, 2026Feb 10, 2026Heat or hot water · Apr 2026 · 1 report (1 complaint)Apr 26, 2026
Source: HPD Complaints and Problems · as of 2026-10-21

Apartments named in these records

Apt 1A 5Apt 1E 2Apt 2B 1Apt 3B 5Apt 3F 2Apt 4 1Apt 4C 1Apt 4D 3Apt 4E 5

9 of this building’s 20 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
What has happened here
2026 Jan
Fire safetyApt 1E class C · HPD violation
2026 Jan
Fire safety class C · HPD violation
2026 Jan
Fire safetyApt 4E class C · HPD violation
2026 Jan
Fire safetyApt 4E class C · HPD violation
2026 Jan
Fire safetyApt 4E class B · HPD violation
2025 Dec
Fire safety class B · HPD violation
Show 11 more
2025 Dec
Fire safety class B · HPD violation
2025 Feb
Fire safetyApt 4D class C · HPD violation
2024 Dec
Fire safety class C · closed · HPD violation
2024 Apr
Lead-based paintApt 3B class C · HPD violation
2024 Mar
Fire safety class C · closed · HPD violation
2024 Feb
Fire safety class C · closed · HPD violation
2008 Feb
Fire protection permit
2003 Nov
Fire protection permit
2003 Apr
Fire protection permit
2001 Jul
Fire protection permit
1996 Nov
Fire protection permit

Structure and facade

Issues on record
What has happened here
2026 Jan
Doors and windowsApt 1E class B · HPD violation
2025 Dec
Doors and windows class B · HPD violation
2025 Dec
Doors and windows class B · HPD violation
2025 Nov
Walls, floors and stairsApt 1A class A · HPD violation
2024 Apr
Doors and windowsApt 3B class C · closed · 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

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

  • BasementfoundNo basement

Heat and hot water

Issues on record · 33 complaints, 2024–2026 · 25 in the past year
What has happened here
2026 Apr
Heat or hot water complaint
2026 Feb
Heat or hot water complaint
2026 Feb
Heat or hot water complaint
2026 Feb
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
Show 38 more
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2026 Jan
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Dec
Heat or hot water complaint
2025 Nov
Heat or hot waterApt 1A class C · HPD violation
2025 Nov
Heat or hot waterApt 1A class C · HPD violation
2025 Nov
Heat or hot water complaint
2025 Nov
Heat or hot water complaint
2025 Nov
Heat or hot waterApt 2B complaint
2025 Feb
Heat or hot waterApt 4D complaint
2025 Feb
Heat or hot waterApt 4 complaint
2025 Jan
Heat or hot water complaint
2025 Jan
Heat or hot water complaint
2024 Dec
Heat or hot waterApt 4C complaint
2024 Dec
Heat or hot water complaint
2024 Dec
Heat or hot water complaint
2024 Nov
Heat or hot waterApt 4D complaint
2024 Apr
Heat or hot water class C · HPD violation
2024 Apr
Heat or hot waterApt 3B class C · HPD violation
2024 Apr
Heat or hot water complaint
2024 Mar
Heat or hot water complaint
2024 Mar
Heat or hot water complaint
2024 Feb
Heat or hot water complaint
2024 Feb
Heat or hot water complaint
2024 Jan
Heat or hot water complaint
1991 Nov
Fuel storage permit, Fuel burning permit
Heat source

Boiler burning No. 2 oil (Federal FM-486), registration current since Sep 2024

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 Nov 2024, 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

28 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

No issues on record
What has happened here
2008 Dec
Plumbing permit
1996 Oct
Plumbing permit
Water service line

Non-Lead (field inspection)

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

Pests and cleanliness

Issues on record (2024) · 1 complaint, 2025
What has happened here
2026 May
Pests class A · paperwork · closed · HPD violation
2025 Sep
Unsanitary conditions complaint
2024 Apr
PestsApt 3B class C · HPD violation
2024 Apr
PestsApt 3B class C · HPD violation

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

General condition and all records

HPD violations

38 open: 38 about building conditions — fire safety (11), smoke or CO detectors (8), walls, floors and stairs (6), heat or hot water (4); 15 immediately hazardous (class C). Also 4 older records from 2015 never closed. 5 further violations from 2024–2026 were closed. 75 violations on record in all, 2012–2026 — the 47 most recent are listed here

2026 May
Pests class A · paperwork · closed
2026 Jan
Doors and windowsApt 1E class B
2026 Jan
Fire safetyApt 1E class C
2026 Jan
Fire safety class C
2026 Jan
Fire safetyApt 4E class C
2026 Jan
Fire safetyApt 4E class C
2026 Jan
Fire safetyApt 4E class B
2026 Jan
Smoke or CO detectorsApt 4E class B
Show 22 more
2026 Jan
Smoke or CO detectorsApt 4E class B
2025 Dec
Fire safety class B
2025 Dec
Smoke or CO detectorsApt 3F class B
2025 Dec
Smoke or CO detectorsApt 3F class B
2025 Dec
Doors and windows class B
2025 Dec
Doors and windows class B
2025 Dec
Fire safety class B
2025 Nov
Smoke or CO detectorsApt 1A class B
2025 Nov
Smoke or CO detectorsApt 1A class B
2025 Nov
Walls, floors and stairsApt 1A class A
2025 Nov
Heat or hot waterApt 1A class C
2025 Nov
Heat or hot waterApt 1A class C
2025 Feb
Fire safetyApt 4D class C
2024 Dec
Fire safety class C · closed
2024 Apr
Lead-based paintApt 3B class C
2024 Apr
Heat or hot water class C
2024 Apr
PestsApt 3B class C
2024 Apr
PestsApt 3B class C
2024 Apr
Heat or hot waterApt 3B class C
2024 Apr
Doors and windowsApt 3B class C · closed
2024 Mar
Fire safety class C · closed
2024 Feb
Fire safety class C · closed
and 12 more at the source
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

10 permits since 1990

2020 Sep
Mechanical systems permit
2008 Dec
Plumbing permit, Fire protection permit
2003 Nov
Fire protection permit
2003 Apr
Fire protection permit
2001 Jul
Fire protection permit
1996 Nov
Fire protection permit, Plumbing permit
1991 Nov
Fuel storage permit, Fuel burning permit
and 3 more at the source
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

Everything else on record
2026 Apr
Doors or windows complaint
2026 Jan
Smoke or CO detectorsApt 4E class B · HPD violation
2026 Jan
Smoke or CO detectorsApt 4E class B · HPD violation
2025 Dec
Smoke or CO detectorsApt 3F class B · HPD violation
2025 Dec
Smoke or CO detectorsApt 3F class B · HPD violation
2025 Nov
Smoke or CO detectorsApt 1A class B · HPD violation
Show 2 more
2025 Nov
Smoke or CO detectorsApt 1A class B · HPD violation
2020 Sep
Mechanical systems permit
  • DOB violationsfound0 open

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.