Building health · BROOKLYN, NY

186 Knickerbocker Ave

built 1931 · 3 stories · 5 apartments
Registered with the city: QUAN YUAN PROPERTY CORP; QUAN YUAN PROPERTY CORP.

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 Oct
Doors or windows, general repairs, unsanitary conditions
Housing Maintenance Code Complaints and Problems
2026 Oct
General repairs, heat or hot water, unsanitary conditions
2026 Oct
Rubbish and cleanliness class B
Housing Maintenance Code Violations
2026 Oct
Heat or hot water, unsanitary conditions
Housing Maintenance Code Complaints and Problems
2026 May
Pests class A · paperwork
Housing Maintenance Code Violations
2026 Apr
Doors and windows class C
2026 Apr
Doors and windows class C
2026 Apr
Fire safety class C
2026 Apr
Leaks class A
2026 Apr
Heat or hot water class C · paperwork
2026 Apr
Smoke or CO detectors class A
2025 Nov
Other conditions class I · paperwork
2025 Nov
Doors or windows
Housing Maintenance Code Complaints and Problems
2025 Nov
Rubbish and cleanliness class A
Housing Maintenance Code Violations
2025 Nov
Fire safety class C · closed
2025 Oct
PL-PER Gas Piping - LL152
DOB Violations
2025 Oct
Heat or hot water
Housing Maintenance Code Complaints and Problems
2025 Oct
Doors or windows
2025 Oct
Electrical
2025 Oct
Plumbing
2025 Jun
Pests class A · paperwork
Housing Maintenance Code Violations
2024 Nov
Other conditions class I · paperwork
2023 Nov
Other conditions class I · paperwork · closed
2023 Sep
Rubbish and cleanliness class B
2023 Sep
Doors and windows class C
2023 Sep
Rubbish and cleanliness class B
2023 Aug
Doors and windowsApt 3L class C
2023 Aug
Smoke or CO detectorsApt 3L class B
2023 Aug
PestsApt 3L class C
2023 Aug
PestsApt 3L class C
2013 Jul
Fire protection permit
DOB NOW: Build – Approved Permits
2013 Jun
Plumbing permit, Heating/ventilation permit, General construction permit
2012 Jun
Latest boiler work permit 2012 (2 on record)
DOB Permit Issuance (BIS)
2012 Jun
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
2006 Nov
Other conditions class B · never closed
Housing Maintenance Code Violations
2006 Sep
Fire safety class B · never closed
2006 Sep
Other conditions class B · never closed
2006 Sep
Other conditions class B · never closed
2006 Sep
Walls, floors and stairs class B · never closed
2006 Sep
Structure and facade class B · never closed
1993 Aug
Local Law 62/91 - Boilers never closed
DOB Violations
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.
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