# 673 Classon Ave, Brooklyn What New York City's public records say about this building. Page: https://blueflo.tech/b/673-classon-avenue-brooklyn > These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. ## In one line 3 open immediately hazardous (class C) HPD violations about electrical and fire safety and heat or hot water (Housing Maintenance Code Violations, as of 2026-10-19) ## The building - **Year built:** 1930 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 4 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 8 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - 3 open immediately hazardous (class C) HPD violations about electrical and fire safety and heat or hot water - 12 open HPD violations about building conditions ## Also on record - On the state's list of buildings with rent-stabilized apartments (2024 registrations) ## Clean in the records - Water service line on record as non-lead (records) (Lead Service Line Location Coordinates, as of 2026-01-30) - Outside FEMA's 1% annual-chance flood zone; no mapped stormwater flooding (FEMA National Flood Hazard Layer, as of 2026-10-20) - No heat or hot water complaints filed last winter (Housing Maintenance Code Complaints and Problems, as of 2026-10-20) ## Building systems - **Boiler inspection filings:** Latest accepted inspection Aug 2021, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-19) - **Facade rating:** Not required: facade inspections apply only to buildings taller than 6 stories (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-19) - **Water service line:** Non-Lead (records) (Lead Service Line Location Coordinates, as of 2026-01-30) - **FEMA flood zone:** Outside FEMA's 1% annual-chance flood zone: X (FEMA National Flood Hazard Layer, as of 2026-10-20) - **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) - **Basement:** Below grade (PLUTO (tax lot data), as of 2026-08-24) ## Violations and complaints - **HPD violations:** 12 open: 12 about building conditions — walls, floors and stairs (3), doors and windows (2), leaks (2), electrical (1); 3 immediately hazardous (class C). Also 13 older records from 2003–2015 never closed. 17 further violations from 2024–2026 were closed. 77 violations on record in all, 2001–2026 — the 42 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-19) - **DOB violations:** 9 open: 3 about building conditions, 1 about filings or paperwork, 5 older than 10 years (DOB Violations, as of 2026-10-19) - **Heat and hot water complaints:** 0 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-20) - **Resident complaints to the city:** 5 doors or windows, 4 mold, 3 safety, 2 floors or stairs, 2 heat or hot water, 2 paint or plaster, 2 pests, 2 plumbing, 1 electrical, 1 general repairs, 1 leaks (Housing Maintenance Code Complaints and Problems, as of 2026-10-20) ## More systems - **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) - **Heat source:** Boiler burning No. 2 oil (Peerless Sct 08 PEERLESS SCT 08), registration expired since Jan 1995 (Clean Air Tracking System (boiler registrations), as of 2026-10-20) - **Boiler work permits:** Latest boiler work permit 1995 (DOB Permit Issuance (BIS), as of 2026-10-19) - **Elevators:** No elevators registered to this building (DOB NOW Elevator Safety Compliance, as of 2026-10-19) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-19) - **Energy:** Not required: energy reporting applies to buildings over 25,000 sq ft (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25) ## Permits and work - **Permit history:** 4 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-19) - **Sidewalk shed and scaffolding:** No sidewalk shed permits on record (DOB NOW: Build – Approved Permits, as of 2026-10-19) - **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24) ## By apartment 6 of 8 apartments named in a city record: - Apt 1L: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/1l - Apt 1R: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/1r - Apt 3L: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/3l - Apt 3R: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/3r - Apt 4L: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/4l - Apt 4R: https://blueflo.tech/b/673-classon-avenue-brooklyn/unit/4r ## Registered with the city - 673 CLASSON AVE REALTY LLC (Agent, Registration Contacts) - 673 CLASSON AVENUE REALTY LLC (CorporateOwner, Registration Contacts) - 673 CLASSON AVENUE REALTY LLC (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/673-classon-avenue-brooklyn/records - The same card as JSON: https://blueflo.tech/v1/buildings/673-classon-avenue-brooklyn - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=673-classon-avenue-brooklyn - How to use this data: https://blueflo.tech/llms.txt