Building health · BROOKLYN, NY

340 Prospect Ave

built 1931 · 3 stories · 6 apartments
Registered with the city: SJC SERVICE SOLUTIONS, INC. · 2 other buildings here list it; CALDER REALTY,LLC; CALDER REALTY, LLC · 2 other buildings here list it

The building’s record over time

Filings, permits, complaints and violations from city records, newest first. Highlighted rows are unresolved and from the last year; older unresolved records are marked “never closed”. Tap any row to read it on the agency’s own site.
2026 Aug
Latest accepted inspection Aug 2026, defects reported: no
DOB NOW: Safety Boiler
2025 Aug
Boiler burning natural gas (Burnham V-906A), registration current since Aug 2025
Clean Air Tracking System (boiler registrations)
2014 May
Low Pressure Boiler never closed
DOB Violations
2013 Oct
Latest boiler work permit 2013
DOB Permit Issuance (BIS)
2013 Oct
Plumbing permit, Boiler permit
DOB NOW: Build – Approved Permits
2007 Sep
Outside FEMA's 1% annual-chance flood zone: X
FEMA National Flood Hazard Layer
1995 Aug
Local Law 62/91 - Boilers never closed
DOB Violations
1989 Jan
Walls, floors and stairsApt 2L class B · never closed
Housing Maintenance Code Violations
1989 Jan
Walls, floors and stairsApt 2L class A · never closed
1989 Jan
Walls, floors and stairsApt 2L class B · never closed
1987 May
Doors and windowsApt 1R class A · never closed
1987 May
Fire safety class B · never closed
1987 May
Walls, floors and stairs class A · never closed
1987 Mar
Walls, floors and stairs class B · never closed
1931
Built
PLUTO (tax lot data)
See all records and sources
Dates are the city's record dates, shown to the month.
These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.
Report an error · Talk to us · Look up another building
Not an inspection and not a warranty. May not be used for tenant screening — terms of use · privacy.
For AI and developers: llms.txt · API · MCP server · this card as markdown