Building health · BROOKLYN, NY
built 1930 · 5 stories · 19 apartments
Also known as 452 Union Ave, 454 Union Ave, 520 Metropolitan Ave — one building, several doors.
Registered with the city: 448 UNION AVENUE REALTY CORP.
Last sold Mar 2025 for $2,865,000 · NYC Department of Finance
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 May
Pests class A · paperwork
Housing Maintenance Code Violations
2026 Apr
Walls, floors and stairsApt 3L class A
2025 Dec
Heat or hot water
Housing Maintenance Code Complaints and Problems
2025 Dec
Heat or hot water
2025 Dec
Heat or hot water
2025 Dec
Heat or hot water
2025 Dec
Paint or plaster, moldApt 3L
2025 Nov
Other conditions class I · paperwork · closed
Housing Maintenance Code Violations
2025 Nov
Heat or hot water
Housing Maintenance Code Complaints and Problems
2025 Oct
Doors and windowsApt 3L class C
Housing Maintenance Code Violations
2025 Oct
Doors and windowsApt 3L class A
2025 Oct
Lead-based paintApt 3L class C · closed
2025 Oct
Lead-based paintApt 3L class C · closed
2025 Oct
Lead-based paintApt 3L class C · closed
2025 Oct
Lead-based paintApt 3L class C · closed
2025 Oct
Walls, floors and stairsApt 3L class A · closed
2025 Oct
Lead-based paintApt 3L class C · closed
2025 Oct
Smoke or CO detectorsApt 3L class B · closed
2025 Oct
Heat or hot waterApt 3L class A · closed
2025 Oct
Doors and windowsApt 3L class A · closed
2025 Oct
Walls, floors and stairsApt 3L class B · closed
2025 Oct
Walls, floors and stairsApt 3L class A · closed
2025 Oct
Walls, floors and stairsApt 3L class B · closed
2025 Oct
Doors and windowsApt 3L class A · closed
2025 Oct
Walls, floors and stairsApt 3L class B · closed
2025 Oct
Walls, floors and stairsApt 3L class A · closed
2025 Oct
Smoke or CO detectorsApt 3L class B · closed
2025 Oct
Heat or hot waterApt 3L
Housing Maintenance Code Complaints and Problems
2025 Oct
Heat or hot waterApt 2
2025 Oct
Heat or hot waterApt 1L1R
2025 Oct
Heat or hot water
2025 Oct
Heat or hot water
2025 Oct
Heat or hot waterApt 3L
2025 Mar
Unsanitary conditions
2025 Mar
Sold for $2,865,000
NYC Citywide Annualized Calendar Sales
2024 Sep
Boiler burning No. 2 oil (Weil Mclain 578), registration current since Sep 2024
Clean Air Tracking System (boiler registrations)
2024 Jul
LeaksApt A2
Housing Maintenance Code Complaints and Problems
2024 Jun
Latest accepted inspection Jun 2024, defects reported: no
DOB NOW: Safety Boiler
2014 May
Low Pressure Boiler never closed
DOB Violations
2013 Jul
Electrical class B · never closed
Housing Maintenance Code Violations
2011 Oct
Electrical class B · never closed
2007 Sep
Outside FEMA's 1% annual-chance flood zone: X
FEMA National Flood Hazard Layer
1997 Nov
Latest boiler work permit 1997 (2 on record)
DOB Permit Issuance (BIS)
1997 Nov
Plumbing permit, Boiler permit
DOB NOW: Build – Approved Permits
1997 Nov
Fuel burning permit, Boiler permit
1993 Aug
Local Law 62/91 - Boilers never closed
DOB Violations
1930
Built
PLUTO (tax lot data)
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.
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Not an inspection and not a warranty. May not be used for tenant screening — terms of use · privacy.