Printed 2026-10-21 from blueflo.tech/b/659-classon-avenue-brooklyn, where it is kept current. These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Not a warranty. May not be used for tenant screening (terms of use).
built 1931 · 4 stories · 14 apartments · BIN 3028011 · BBL 3011420003
- Basement on record, and the city's stormwater map shows flooding here in at least one storm scenario
- City stormwater map shows nuisance flooding at this building in the Extreme storm, 2080 sea levels scenario
- Water service line on record as non-lead (field inspection)
- Outside FEMA's 1% annual-chance flood zone
- No open HPD violations about building conditions from the last 10 years
- No heat or hot water complaints filed last winter
636 CLASSON ASSOC LP
Flooding
Issues on recordOutside FEMA's 1% annual-chance flood zone: X
What this counts
Effective FIRM zones touching the building footprint
Extreme storm, 2080 sea levels: Nuisance flooding (4 in. to 1 ft); Moderate storm, 2050 sea levels: Nuisance flooding (4 in. to 1 ft); Moderate storm, today's sea levels: Nuisance flooding (4 in. to 1 ft); Limited storm, today's sea levels: Not loaded (file format unreadable)
What this counts
Mapped ponding touching the building footprint
Below grade
Water and pipes
No issues on recordNon-Lead (field inspection)
Pests and cleanliness
Older records on fileRent and tenancy
On the state listOn 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. Listed under the J-51 tax program, so stabilization can end when the exemption does
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
General condition and all records
1 open: 1 about paperwork or notices
What this counts
Open HPD violations inspected in the last 10 years; class C = immediately hazardous. Paperwork = failure to file, notify or certify
- DOB violationsfound0 open
- Resident complaints to the cityfoundno complaints
- Permit historyno record0 permits since 1990
Nothing on record
- Heat sourceno recordNo boiler registration or district steam on record
- Boiler inspection filingsno recordNo boiler filings under this building's ID
- Boiler work permitsno recordNo boiler work permits on record
- Heat and hot water complaintsfound0 heat or hot water complaints
- Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published
- Energynot requiredNot required: energy reporting applies to buildings over 25,000 sq ft
- 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
- Elevatorsnot requiredNo elevators registered to this building
Sources
23 datasetsFEMA
- FEMA National Flood Hazard Layer2026-10-20
- OpenFEMA NFIP Redacted Claims (v3)2026-09-09
NYC DCP
- NYC GeoSearch (address directory)2026-10-20
- PLUTO (tax lot data)2026-08-24
NYC DEP
NYC DEP / Mayor's Office
- NYC Stormwater Flood Maps2024-07-03
NYC DOB
- DOB NOW Elevator Safety Compliance2026-10-19
- DOB NOW: Build – Approved Permits2026-10-19
- DOB NOW: Safety Boiler2026-10-19
- DOB NOW: Safety – Facades Compliance Filings2026-10-19
- DOB Permit Issuance (BIS)2026-10-19
- DOB Safety Violations2026-10-19
- DOB Violations2026-10-19
NYC DOB / Mayor's Office
NYC HPD
- Buildings Subject to HPD Jurisdiction2026-08-12
- Housing Maintenance Code Complaints and Problems2026-10-20
- Housing Maintenance Code Violations2026-10-19
- Multiple Dwelling Registrations2026-08-12
- Registration Contacts2026-08-12
NYC OTI
- AddressPoint2026-07-07
- Building Footprints2026-10-19
NYC Rent Guidelines Board / NYS HCR
Each date is when we last checked that dataset, not when the record itself was created.