Building health · MANHATTAN, NY

309 W 99 St

built 1911 · 8 stories · 47 apartments
Registered with the city: 309 WEST 99TH STREET ASSOCIATES LLC
Last sold May 2020 for $18,500,000 · NYC Department of Finance

Apartments named in these records

8 of this building’s 47 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

Heat and hot water

5 complaints, 2024–2026 · 1 in the past year
Heat source

Boiler burning natural gas (Rockmills MP-100), registration current since Apr 2025

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 Mar 2026, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-21 · See the boiler filings at DOB →
What this counts

Accepted annual boiler inspection filings, any date

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

Water and pipes

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

Pests and cleanliness

Issues on record · 5 complaints, 2025–2026 · 3 in the past year

Electrical

2 complaints, 2025–2026 · 1 in the past year

Structure and facade

Issues on record, most recently 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 2026-10-21
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

BasementWhole tax lot

Below grade

PLUTO (tax lot data), as of 2026-08-24

Elevators

No issues on record
Elevators

1 active elevator; latest periodic inspection Mar 2026

DOB NOW Elevator Safety Compliance, as of 2026-10-21 · 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 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

  • Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published

Energy

Energy

ENERGY STAR score 77 (2023 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

10 open: 10 about building conditions — fire safety (2), mold (2), other conditions (2), smoke or CO detectors (2); 2 immediately hazardous (class C). Also 4 older records from 2001–2016 never closed. 25 further violations from 2025–2026 were closed. 525 violations on record in all, 1987–2026 — the 47 most recent are listed here

2026 Sep
Other conditions class A
2026 Sep
Fire safety class C
2026 Sep
MoldApt 7B class A
2026 Sep
Smoke or CO detectorsApt 7B class B
2026 Sep
Smoke or CO detectorsApt 7B class B
2026 Sep
MoldApt 7B class A
2026 Sep
Other conditionsApt 7B class B
2026 Apr
Pests class A · paperwork · closed
Show 31 more
2026 Apr
Smoke or CO detectorsApt 7B class B · closed
2026 Apr
Smoke or CO detectorsApt 7B class B · closed
2026 Apr
Doors and windows class A · closed
2026 Apr
Fire safety class C · closed
2026 Apr
Doors and windows class A · closed
2026 Apr
Fire safety class C · closed
2026 Apr
Smoke or CO detectorsApt 7B class B · closed
2025 Dec
Walls, floors and stairsApt 7B class A · closed
2025 Dec
GasApt 7B class B · closed
2025 Dec
Walls, floors and stairsApt 7B class A · closed
2025 Dec
MoldApt 7B class A · closed
2025 Dec
Walls, floors and stairsApt 7B class A · closed
2025 Jul
LeaksApt 1C class B · closed
2025 Jul
Walls, floors and stairsApt 1C class B · closed
2025 Jul
LeaksApt 1C class B · closed
2025 Jun
Smoke or CO detectorsApt 4B class B · closed
2025 Jun
Smoke or CO detectorsApt 4B class B · closed
2025 Jun
Pests class A · paperwork · closed
2025 May
Smoke or CO detectorsApt 5D class B · closed
2025 May
Smoke or CO detectorsApt 5D class B · closed
2025 Mar
PestsApt 4B class C
2025 Mar
Walls, floors and stairsApt 4B class B
2025 Mar
MoldApt 4B class B · closed
2025 Mar
MoldApt 4B class A · closed
2025 Mar
PlumbingApt 4B class B · closed
2025 Mar
Doors and windows class B · closed
2020 Aug
Fire safetyApt 7A1 class B
2016 Jul
Fire safetyApt 7A1 class B · never closed
2016 Jun
Fire safetyApt 7A1 class B · never closed
2001 Aug
PlumbingApt 2 class B · never closed
2001 Aug
Other conditionsApt 2 class B · never closed
Housing Maintenance Code Violations, as of 2026-10-21 · 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

7 permits since 1990

DOB NOW: Build – Approved Permits, as of 2026-10-21 · See every permit at DOB →
What this counts

DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds

SalesWhole tax lot

Last sold May 2020 for $18,500,000

NYC Citywide Annualized Calendar Sales, as of 2026-06-09
What this counts

Department of Finance sales files, 2016 on

  • DOB violationsfound0 open

Sources

24 datasets

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

Every row shows the record it came from and the date it was last checked.
These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.
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