623 W 170 St

Fire safety class B · HPD violation

Lead-based paintApt 4E class C · paperwork · HPD violation

Show 18 more

Lead-based paintApt 4E class C · closed · HPD violation

Lead-based paintApt 4E class C · closed · HPD violation

Lead-based paintApt 4E class C · closed · HPD violation

Lead-based paintApt 4E class C · closed · HPD violation

Lead-based paintApt 4B class C · paperwork · HPD violation

Lead-based paint class C · paperwork · HPD violation

Heat and hot water

Issues on record (2025) · 28 complaints, 2024–2026 · 10 in the past year

What has happened here

2026 Feb

2026 Jan

Heat or hot waterApt 4E class B · closed · HPD violation

Heat or hot waterApt 4C complaint

Show 37 more

Heat or hot waterApt 2A complaint

2025 Nov

2025 Nov

Heat or hot waterApt 1A complaint

Heat or hot water class C · paperwork · HPD violation

2025 Feb

Heat or hot waterApt 4C class C · HPD violation

Heat or hot waterApt 5A complaint

Heat or hot waterApt 4C complaint

Heat or hot waterApt 4C complaint

Heat or hot waterApt 2C complaint

2024 May

Heat or hot waterApt 3D complaint

Heat or hot waterApt 3E complaint

Heat or hot waterApt 3E complaint

Boilers class - 2 · DOB violation

2022 May

2005 Oct

Fuel storage permit

1999 Sep

Fuel burning permit, Boiler permit

Heat source

Boiler burning natural gas (Federal FST-60), registration expired since Dec 2022

Clean Air Tracking System (boiler registrations), as of 2026-10-19 · See this building's boiler registrations on NYC Open Data →

Boiler inspection filings

Latest accepted inspection Jun 2025, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-17 · See the boiler filings at DOB →

What this counts

Accepted annual boiler inspection filings, any date

Boiler work permits

Latest boiler work permit 1999

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

12 heat or hot water complaints

Housing Maintenance Code Complaints and Problems, as of 2026-10-19 · 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, 2025–2026 · 2 in the past year

What has happened here

PlumbingApt 4E class B · HPD violation

PlumbingApt 4E complaint

PlumbingApt 4E class B · HPD violation

PlumbingApt 4E class C · closed · HPD violation

PlumbingApt 4E class B · closed · HPD violation

PlumbingApt 4E class B · closed · HPD violation

Show 8 more

PlumbingApt 4E complaint

PlumbingApt 4C complaint

LeaksApt 4B complaint

LeaksApt 5A complaint

PlumbingApt 5E complaint

PlumbingApt 1A complaint

Water service line

Galvanized Service Line Requiring Replacement (records)

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

Pests and cleanliness

3 complaints, 2025–2026 · 2 in the past year

What has happened here

MoldApt 4E complaint

Mold, pestsApt 4E complaint

Show 2 more

2025 Feb

PestsApt 4B complaint

PestsApt 1A complaint

Electrical

1 complaint, 2025

What has happened here

ElectricalApt 4E class B · closed · HPD violation

ElectricalApt 4E class B · closed · HPD violation

ElectricalApt 4E complaint

Structure and facade

Older records on file

What has happened here

Doors and windowsApt 4E class C · closed · HPD violation

Doors and windowsApt 4E class B · closed · HPD violation

Doors and windowsApt 4E class B · closed · HPD violation

Walls, floors and stairsApt 4E class A · closed · HPD violation

Walls, floors and stairsApt 4E class B · closed · HPD violation

Walls, floors and stairsApt 4E class A · closed · HPD violation

Show 7 more

Walls, floors and stairsApt 4E class A · closed · HPD violation

Walls, floors and stairsApt 4E class A · closed · HPD violation

Walls, floors and stairs class C · closed · HPD violation

Construction class - 2 · never closed · DOB violation

2015 Oct

2005 Oct

1991 Jan

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

No issues on record

FEMA flood zone

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

FEMA National Flood Hazard Layer, as of 2026-10-19

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

Gas

What has happened here

PL-PER Gas Piping - LL152 DOB violation

Gas piping

Open violation for not filing the periodic gas piping inspection (2025)

DOB Safety Violations, as of 2026-10-18

What this counts

Paperwork violation: the filing is missing, which is not a finding about the pipes

Energy

ENERGY STAR score 100 (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

33 open: 29 about building conditions — lead-based paint (20), heat or hot water (2), mold (2), plumbing (2); 22 immediately hazardous (class C), 4 about paperwork or notices. 25 further violations from 2025–2026 were closed. 143 violations on record in all, 2014–2026 — the 90 most recent are listed here

Fire safety class B

Other conditionsApt 4E class B

PlumbingApt 4E class B

PlumbingApt 4E class B

Show 42 more

Smoke or CO detectorsApt 4E class B · closed

Smoke or CO detectorsApt 4E class B · closed

PlumbingApt 4E class C · closed

ElectricalApt 4E class B · closed

Lead-based paintApt 4E class C · paperwork

PlumbingApt 4E class B · closed

Doors and windowsApt 4E class C · closed

Doors and windowsApt 4E class B · closed

Heat or hot waterApt 4E class B · closed

PlumbingApt 4E class B · closed

Doors and windowsApt 4E class B · closed

ElectricalApt 4E class B · closed

Walls, floors and stairsApt 4E class B · closed

Walls, floors and stairs class C · closed

Heat or hot water class C · paperwork

Heat or hot waterApt 4C class C

Lead-based paintApt 4B class C · paperwork

Lead-based paint class C · paperwork

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

3 open: 1 about building conditions, 1 about filings or paperwork, 1 older than 10 years

PL-PER Gas Piping - LL152

2022 May

Boilers class - 2

2015 Oct

Construction class - 2 · never closed

DOB Violations, as of 2026-10-18 · 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

Resident complaints to the city

28 heat or hot water, 6 paint or plaster, 4 doors or windows, 4 plumbing, 3 appliances, 3 electrical, 2 floors or stairs, 2 general repairs, 2 mold, 2 pests

Doors or windows, general repairsApt 4B

2026 Jun

Heat or hot waterApt 4C

Show 40 more

Electrical, paint or plasterApt 4E

Doors or windows, general repairs, paint or plaster, plumbing, mold, pestsApt 4E

Heat or hot waterApt 2A

2025 Nov

Heat or hot waterApt 1A

Heat or hot water, pestsApt 4B

Paint or plasterApt 5E

2025 Feb

Heat or hot waterApt 5A

Heat or hot waterApt 4C

Heat or hot waterApt 4C

Heat or hot water, paint or plasterApt 4B

Appliances, doors or windows, floors or stairs, heat or hot water, paint or plasterApt 4B

Doors or windows, floors or stairs, heat or hot water, paint or plasterApt 4B

2024 May

Heat or hot waterApt 2C

Heat or hot waterApt 3D

Heat or hot waterApt 3E

PlumbingApt 5E

Heat or hot waterApt 3E

Floors or stairs, paint or plaster, plumbing, pestsApt 1A

Housing Maintenance Code Complaints and Problems, as of 2026-10-19 · 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

8 permits since 1990

General construction permit, Fuel storage permit

2022 Sep

Plumbing permit

2005 Oct

1999 Sep

Fuel burning permit, Boiler permit

1991 Jan

Plumbing permit, General construction permit

and 3 more at the source

DOB NOW: Build – Approved Permits, as of 2026-10-17 · 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 Jun

Doors or windows, general repairsApt 4B complaint

Other conditionsApt 4E class B · HPD violation

AppliancesApt 4B complaint

Smoke or CO detectorsApt 4E class B · closed · HPD violation

Smoke or CO detectorsApt 4E class B · closed · HPD violation

Paint or plasterApt 4E complaint

Show 6 more

Doors or windows, general repairs, paint or plasterApt 4E complaint

Paint or plasterApt 5E complaint

Paint or plasterApt 4B complaint

Appliances, doors or windows, floors or stairs, paint or plasterApt 4B complaint

Doors or windows, floors or stairs, paint or plasterApt 4B complaint