Building health · MANHATTAN, NY

18 Thompson St

built 1910 · 6 stories · 10 apartments
Also known as 20 Thompson St, 35 Grand St — one building, several doors.

Apartments named in these records

1 of this building’s 10 apartments is 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

In a FEMA special flood hazard area: AE

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: Deep and contiguous flooding (1 ft+); Moderate storm, 2050 sea levels: Deep and contiguous flooding (1 ft+); Moderate storm, today's sea levels: Deep and contiguous flooding (1 ft+); 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

Above grade

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

Heat and hot water

No issues on record
Heat source

Boiler burning natural gas (Weil Mclain ULTRA-310), registration current since Apr 2024

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 Jan 2026, 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 2008

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 complaintsfound0 heat or hot water complaints

Water and pipes

1 complaint, 2025
Water service line

Non-Lead (records)

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

Fire and safety

No issues on record
What has happened here

Structure and facade

No issues on record
  • Facade ratingnot requiredNot required: facade inspections apply only to buildings taller than 6 stories
  • Sidewalk shed and scaffoldingfoundNo active shed permit; permits since Apr 2025, last expired Apr 2026
  • Landmark statusno recordNot in a historic district on record

Elevators

No issues on record
Elevators

1 active elevator; latest periodic inspection Aug 2026

DOB NOW Elevator Safety Compliance, as of 2026-10-18 · See this building's elevators on NYC Open Data →
What this counts

Active elevator devices registered to this building ID

General condition and all records

Resident complaints to the city

1 plumbing

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

32 permits since 1990

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

  • HPD violationsfound0 open
  • DOB violationsfound0 open

Nothing on record

Rent and tenancyNot on the state list
  • Rent stabilizationno recordNot on the state's 2024 list. Owners who register late or not at all are missing, so ask HCR about a specific apartment
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

Sources

23 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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