Brooklyn · Block 3186 · Lot 35 · 11237

236 Knickerbocker Avenue

3 floors · 4 apartments · 5,250 sq ft · built 1931 · class S4 · owner of record: Chen, Li Feng

4open violations
$0ECB/OATH penalties owed
2HPD class C (immediately hazardous)
Overdueto Annual property registration

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New violations the morning after they're issued, plus deadline reminders. Free for one building.

Compliance deadlines

RequirementDueStatus
Annual property registration Applies
HPD registration · September 1 each year
What this is

Residential buildings with three or more units, and one- and two-family homes the owner doesn't occupy, register with HPD every year ($13 fee). An unregistered building can't start a nonpayment case in Housing Court and faces civil penalties. Agency page

OverdueRegistration expired 2026-09-01
Gas piping inspection (2026 cycle) Likely applies
Local Law 152 · During 2026
What this is

Buildings with gas piping (except one- and two-family homes) need a periodic gas piping inspection by a licensed master plumber every four years. Community district 4 is on the 2026 cycle; certification is filed with DOB after the inspection. Buildings with no gas piping file a certification instead. Agency page

Dec 31, 2026
in 70 days
Due this year
Annual parapet observation Check
Local Law 126 · By December 31 each year
What this is

If the building has a parapet facing a street, sidewalk or other public way, a competent person (such as a mason, engineer or architect) must observe it every year and the owner keeps the report for DOB on request. Detached one- and two-family homes are exempt. Agency page

Dec 31, 2026
in 70 days
Keep the report on file (not filed with DOB)
Bedbug annual filing Applies
Local Law 69 · December 1 to 31 each year
What this is

Owners of multiple dwellings file their bedbug infestation history for the prior year with HPD and post or distribute it to tenants. Agency page

Dec 31, 2026
in 70 days
Annual
Annual boiler inspection (1 boiler) Applies
Boiler inspection · By December 31 each year
What this is

Boilers are inspected each calendar year and the report is filed in DOB NOW: Safety within 14 days of the inspection (low-pressure boilers in residential buildings of 5 or fewer families are exempt). Latest report on record: 2026-04-22 (Pre-filing). Agency page

Dec 31, 2026
in 70 days
1 of 1 without an accepted 2026 report yet
Annual notice: window guards and lead paint Applies
HPD / Health Code · January 1 to 16 each year
What this is

Deliver the annual notice to every unit asking whether a child lives there (window guards for children 10 and under; lead paint for children under 6 in pre-1960 buildings), then follow up on units that don't return it by mid-February. Agency page

Jan 16, 2027
in 86 days
Annual

Open violations

ECB / OATH (0)

None open.

DOB (0)

None open.

DOB NOW Safety (0)

None open.

HPD (4) · C 2 · B 2 · A 0
IssuedClassViolationCorrect by
Aug 13, 2009CSECTION 27-2018 ADM CODE ABATE THE NUISANCE CONSISTING OF RODENTS RATS REAR YARD THROUGHOUTAug 19, 2009
Aug 13, 2009BApt 2L · SECTION 27-2018 ADM CODE ABATE THE NUISANCE CONSISTING OF VERMIN CONSISTING OF MICE AND ROACHES 2 STY APT 2L. LOCATED AT APT 2LSep 17, 2009
Aug 13, 2009CSECTION 27-2018 ADM CODE ABATE THE NUISANCE CONSISTING OF RODENTS RATS CELLAR THRU OUTAug 19, 2009
Aug 13, 2009BSECTION 12 M/D LAW DISCONTINUE THE STORAGE OF COMBUSTIBLE MATERIAL CONSISTING OF WOOD ITEMS SCATTERED THRU OUT CELLAR FRONT.Sep 17, 2009

Check the agency records

Always confirm on the city's own systems before acting: DOB BIS property profile · DOB NOW · HPD Online · Pay ECB/OATH penalties (CityPay)

City records as of Oct 22, 2026, 9:55 PM ET. BBL 3031860035.

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