Brooklyn · Block 3392 · Lot 1 · 11237

733 Knickerbocker Avenue

4 floors · 8 apartments · 6,864 sq ft · built 1905 · class C7 · owner of record: G A G Llc

8open violations
$0ECB/OATH penalties owed
3HPD 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 69 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 69 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 69 days
Annual
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 85 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: 2026-05-20 (Accepted). Agency page

On file2026 reports accepted

Open violations

ECB / OATH (0)

None open.

DOB (0)

None open.

DOB NOW Safety (1)
IssuedViolationStatus
Oct 31, 2025Gas Piping - LL152 FTF-PL-PER
Cycle 1, Sub-cycle C (premises is in Community District 4)
Active
HPD (7) · C 3 · B 4 · A 0
IssuedClassViolationCorrect by
Oct 6, 2026BApt 4L · § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT SOUTH WALL SOUTH WALL IN THE BATHROOM LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983490 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER ADMINISTNov 10, 2026
Oct 6, 2026BApt 4L · § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET WEST WALL IN THE BATHROOM LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983491 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE 27-Nov 10, 2026
Oct 6, 2026BApt 4L · § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT EAST WALL IN THE 1st ROOM FROM EAST AT NORTH LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983498 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER ANov 10, 2026
Jun 8, 2026CApt 4L · § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTHJun 22, 2026
Jun 8, 2026CApt 4L · HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTHJul 4, 2026
Jun 8, 2026CApt 4L · HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTHJul 4, 2026
Jun 8, 2026BApt 4L · § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 10 SQUARE FEET AT CEILING CEILING IN THE BATHROOM LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTHJul 13, 2026

Issued in the last 120 days

DateSourceWhatNow
Oct 6, 2026HPD B§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT SOUTH WALL SOUTH WALL IN THE BATHROOM LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983490 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER ADMINISTOpen
Oct 6, 2026HPD B§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET WEST WALL IN THE BATHROOM LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983491 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE 27-Open
Oct 6, 2026HPD B§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT EAST WALL IN THE 1st ROOM FROM EAST AT NORTH LOCATED AT APT 4L, 4th STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 18983498 ISSUED 05-JUN-26 HAS BEEN UPGRADED TO CLASS B PER AOpen

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 23, 2026, 11:33 PM ET. BBL 3033920001.

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