# 448 Union Ave, Brooklyn What New York City's public records say about this building. Page: https://blueflo.tech/b/448-union-avenue-brooklyn > These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Also known as 452 Union Ave, 454 Union Ave, 520 Metropolitan Ave: one building, several doors, and this card covers all of them. ## In one line City records list the water service line as lead (Lead Service Line Location Coordinates, as of 2026-01-30) ## The building - **Year built:** 1930 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 5 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 19 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - City records list the water service line as lead - 1 open immediately hazardous (class C) HPD violation about doors and windows - 15 heat or hot water complaints filed with the city last winter - Basement on record, and the city's stormwater map shows flooding here in at least one storm scenario ## Also on record - On the state's list of buildings with rent-stabilized apartments (2024 registrations) - City stormwater map shows nuisance flooding at this building in the Extreme storm, 2080 sea levels scenario ## Clean in the records - Outside FEMA's 1% annual-chance flood zone (FEMA National Flood Hazard Layer, as of 2026-10-21) ## Building systems - **Boiler inspection filings:** Latest accepted inspection Jun 2024, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-20) - **Facade rating:** Not required: facade inspections apply only to buildings taller than 6 stories (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-20) - **Water service line:** Lead (field inspection) (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 2026-10-21) - **Stormwater flooding:** Extreme storm, 2080 sea levels: Nuisance flooding (4 in. to 1 ft); 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:** No basement (PLUTO (tax lot data), as of 2026-08-24) ## Violations and complaints - **HPD violations:** 4 open: 3 about building conditions — doors and windows (2), walls, floors and stairs (1); 1 immediately hazardous (class C), 1 about paperwork or notices. Also 2 older records from 2011–2013 never closed. 17 further violations from 2025 were closed. 39 violations on record in all, 1985–2026 — the 23 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-20) - **DOB violations:** 2 open: 1 about filings or paperwork, 1 older than 10 years (DOB Violations, as of 2026-10-20) - **Heat and hot water complaints:** 15 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-21) - **Resident complaints to the city:** 11 heat or hot water, 1 mold, 1 paint or plaster, 1 unsanitary conditions (Housing Maintenance Code Complaints and Problems, as of 2026-10-21) ## 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 (Weil Mclain 578), registration current since Sep 2024 (Clean Air Tracking System (boiler registrations), as of 2026-10-21) - **Boiler work permits:** Latest boiler work permit 1997 (2 on record) (DOB Permit Issuance (BIS), as of 2026-10-20) - **Elevators:** No elevators registered to this building (DOB NOW Elevator Safety Compliance, as of 2026-10-20) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-20) - **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 2026-10-20) - **Sales:** Last sold Mar 2025 for $2,865,000 (NYC Citywide Annualized Calendar Sales, as of 2026-06-09) - **Sidewalk shed and scaffolding:** No sidewalk shed permits on record (DOB NOW: Build – Approved Permits, as of 2026-10-20) - **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24) ## By apartment 4 of 19 apartments named in a city record: - Apt 1L1R: https://blueflo.tech/b/448-union-avenue-brooklyn/unit/1l1r - Apt 2: https://blueflo.tech/b/448-union-avenue-brooklyn/unit/2 - Apt 3L: https://blueflo.tech/b/448-union-avenue-brooklyn/unit/3l - Apt A2: https://blueflo.tech/b/448-union-avenue-brooklyn/unit/a2 ## Registered with the city - 448 UNION AVENUE REALTY CORP. (CorporateOwner, Registration Contacts) - 448 UNION AVENUE REALTY CORP. (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/448-union-avenue-brooklyn/records - The same card as JSON: https://blueflo.tech/v1/buildings/448-union-avenue-brooklyn - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=448-union-avenue-brooklyn - How to use this data: https://blueflo.tech/llms.txt