720 St Marks Ave

Heat or hot waterApt 6G class C · closed · HPD violation

Heat or hot water class C · closed · HPD violation

Heat or hot waterApt 6D class C · closed · HPD violation

Heat or hot waterApt 1E complaint

Show 76 more

Heat or hot waterApt 5E complaint

Heat or hot waterApt 5A complaint

Heat or hot waterApt 1C complaint

Heat or hot waterApt 5A complaint

Heat or hot waterApt 5G complaint

Heat or hot waterApt 2D complaint

Heat or hot waterApt 3D complaint

Heat or hot waterApt 3E complaint

Heat or hot waterApt 5A complaint

Heat or hot waterApt 2B complaint

Heat or hot waterApt 4B complaint

Heat or hot water class C · closed · HPD violation

Heat or hot waterApt 4E complaint

Heat or hot waterApt 5G complaint

2024 Dec

2024 Dec

Heat or hot waterApt 3E complaint

2024 Mar

Heat or hot waterApt 5G complaint

Heating/ventilation permit

2006 Oct

Fuel storage permit

2001 Oct

Heat source

Boiler burning No. 2 oil (Rockmills MP-100), registration current since Aug 2026

Clean Air Tracking System (boiler registrations), as of 2026-10-21 · See this building's boiler registrations on NYC Open Data →

Boiler inspection filings

Latest accepted inspection Dec 2025, 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 and hot water complaints

62 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

8 complaints, 2024–2026 · 1 in the past year

What has happened here

PlumbingApt 2K complaint

PlumbingApt 2J class B · closed · HPD violation

LeaksApt 2J class B · closed · HPD violation

2025 Aug

PlumbingApt 6D complaint

Show 4 more

LeaksApt 3H complaint

Water service line

Non-Lead (statistical analysis/predictive model)

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

Pests and cleanliness

Issues on record · 12 complaints, 2025–2026 · 8 in the past year

What has happened here

PestsApt 6C complaint

PestsApt 2K class C · HPD violation

MoldApt 2K complaint

2026 Jun

PestsApt 5K complaint

Show 14 more

MoldApt 3E class C · closed · HPD violation

2026 Apr

2026 Mar

MoldApt 3E complaint

MoldApt 2J class B · HPD violation

PestsApt 2J class C · closed · HPD violation

MoldApt 2J class A · closed · HPD violation

Pests class C · closed · HPD violation

Pests class C · closed · HPD violation

MoldApt 2J complaint

2025 Sep

MoldApt 6D class B · closed · HPD violation

PestsApt 6D complaint

MoldApt 6D complaint

Fire and safety

8 resolved since 2025

What has happened here

Fire safetyApt 2J class C · closed · HPD violation

Fire safetyApt 4J class C · closed · HPD violation

Fire safetyApt 5B class C · closed · HPD violation

Show 2 more

Fire safetyApt 6D class C · closed · HPD violation

Electrical

Issues on record · 5 complaints, 2025–2026 · 1 in the past year

What has happened here

ElectricalApt 2K class B · HPD violation

ElectricalApt 2K class B · HPD violation

ElectricalApt 2K class B · HPD violation

ElectricalApt 2K complaint

Electrical class A · closed · HPD violation

Show 3 more

Elevators class - 2 · DOB violation

Flooding

No issues on record

FEMA flood zone

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

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

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

BasementfoundNo basement

Elevators

Issues on record (2022) · 3 complaints, 2025–2026 · 2 in the past year

What has happened here

2022 Jul

Elevators class - 1 · DOB violation

2020 Jan

Elevator DOB violation

Show 3 more

2006 Jun

Elevator never closed · DOB violation

2006 Jun

Elevator never closed · DOB violation

2006 May

Elevator never closed · DOB violation

Elevators

1 active elevator; latest periodic inspection Feb 2026

DOB NOW Elevator Safety Compliance, as of 2026-10-20 · See this building's elevators on NYC Open Data →

What this counts

Active elevator devices registered to this building ID

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

Energy

ENERGY STAR score 95 (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

48 open: 47 about building conditions — walls, floors and stairs (19), other conditions (7), doors and windows (6), pests (6); 9 immediately hazardous (class C), 1 about paperwork or notices. Also 1 older record from 2009 never closed. 25 further violations from 2025–2026 were closed. 720 violations on record in all, 1999–2026 — the 94 most recent are listed here

Other conditionsApt 2K class C

Other conditionsApt 2K class B

Walls, floors and stairsApt 2K class B

ElectricalApt 2K class B

Walls, floors and stairsApt 2K class C

ElectricalApt 2K class B

PestsApt 2K class C

Walls, floors and stairsApt 2K class A

Show 42 more

Doors and windowsApt 2K class A

ElectricalApt 2K class B

Walls, floors and stairsApt 2K class B

Other conditionsApt 2K class B

2026 Aug

Walls, floors and stairsApt 2J class A

2026 Aug

2026 Aug

MoldApt 3E class C · closed

2026 Apr

Heat or hot waterApt 6G class C · closed

Heat or hot water class C · closed

Heat or hot waterApt 6D class C · closed

MoldApt 2J class B

Doors and windowsApt 2J class C

Walls, floors and stairsApt 2J class A

Walls, floors and stairsApt 2J class C

Walls, floors and stairsApt 2J class C

Doors and windowsApt 2J class A

PlumbingApt 2J class B · closed

PestsApt 2J class C · closed

MoldApt 2J class A · closed

Walls, floors and stairsApt 2J class A

Pests class C · closed

LeaksApt 2J class B · closed

Other conditions class B · closed

Fire safetyApt 2J class C · closed

Fire safetyApt 4J class C · closed

Fire safetyApt 5B class C · closed

2025 Sep

Pests class C · closed

Electrical class A · closed

MoldApt 6D class B · closed

Walls, floors and stairsApt 6D class A · closed

Fire safetyApt 6D class C · closed

Other conditionsApt 6D class B · closed

Heat or hot water class C · closed

Walls, floors and stairsApt 6A class B · 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

DOB violations

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

Elevator never closed

2006 Jun

Elevator never closed

2006 May

Elevator never closed

1999 Sep

Local Law non-hazardous · never closed

DOB Violations, as of 2026-10-20 · 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

66 heat or hot water, 12 paint or plaster, 7 leaks, 6 doors or windows, 5 electrical, 5 unsanitary conditions, 4 line of travel, 4 mold, 3 elevators, 3 floors or stairs, 3 pests, 2 general repairs, 2 plumbing

Paint or plasterApt 6C

PestsApt 6C

Electrical, floors or stairs, plumbing, moldApt 2K

2026 Jun

PestsApt 5K

Show 100 more

Doors or windowsApt 5K

Heat or hot waterApt 1E

Heat or hot waterApt 5E

Heat or hot waterApt 5A

Heat or hot waterApt 1C

Heat or hot waterApt 5A

Heat or hot waterApt 5G

Heat or hot waterApt 2D

Heat or hot waterApt 3D

Floors or stairs, paint or plaster, moldApt 2J

Heat or hot waterApt 3E

Doors or windows, paint or plaster, leaksApt 6B

Heat or hot waterApt 5A

2025 Aug

Heat or hot waterApt 2B

Doors or windows, paint or plaster, leaksApt 6B

PestsApt 6D

General repairsApt 6D

Electrical, paint or plasterApt 6D

General repairsApt 6D

Doors or windows, electrical, floors or stairs, paint or plaster, plumbing, moldApt 6D

Elevators, unsanitary conditions

Heat or hot waterApt 4B

Doors or windows, paint or plaster, leaksApt 6B

Heat or hot waterApt 4E

Doors or windows, leaksApt 6B

Electrical, heat or hot waterApt 6D

Heat or hot waterApt 5G

2024 Dec

Heat or hot water, paint or plasterApt 3E

Paint or plaster, leaksApt 6B

Heat or hot waterApt 5G

Doors or windowsApt 4K

General construction permit

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

7 permits since 1990

2022 Apr

Antenna permit

2013 Feb

2009 Jan

General construction permit

2007 Jan

General construction permit

2006 Oct

Fuel storage permit

2001 Oct

Heating/ventilation permit, General construction permit

and 1 more at the source

DOB NOW: Build – Approved Permits, as of 2026-10-20 · 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

Paint or plasterApt 6C complaint

Other conditionsApt 2K class C · HPD violation

Other conditionsApt 2K class B · HPD violation

Other conditionsApt 2K class B · HPD violation

Floors or stairsApt 2K complaint

Doors or windowsApt 5K complaint

Show 21 more

Other conditions class B · closed · HPD violation

Floors or stairs, paint or plasterApt 2J complaint

Line of travelApt 2J complaint

Line of travelApt 4J complaint

Line of travelApt 5B complaint

Doors or windows, paint or plasterApt 6B complaint

Line of travel complaint

2025 Aug

Doors or windows, paint or plasterApt 6B complaint

General repairsApt 6D complaint

Paint or plasterApt 6D complaint

Other conditionsApt 6D class B · closed · HPD violation

General repairsApt 6D complaint

Doors or windows, floors or stairs, paint or plasterApt 6D complaint

Doors or windows, paint or plasterApt 6B complaint

Doors or windowsApt 6B complaint

Paint or plasterApt 3E complaint

Paint or plasterApt 6B complaint

2024 Mar

AppliancesApt 2C complaint