307 Knickerbocker Avenue
Brooklyn, NY 11237BBL 3-03220-0002Map
Owner of record: Ambrosino Equities LLC
307 Knickerbocker Avenue is a mixed residential and retail building built in 1931 in Brooklyn, 11237. It has 6 residential units across 4 floors. The owner of record is Ambrosino Equities LLC. HPD has recorded 44 housing violations here, most recently on May 5, 2026. City tax records listed 6 rent-stabilized apartments here in 2024.
- HPD violations
- 44
- DOB violations
- 6
- ECB violations
- 3
- HPD complaints
- 24
What to know
No open immediately-hazardous violations among recent records.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.
Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 44
- ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
May 5, 2026
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Jun 10, 2025
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of mice in the entire apartment located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective wood floor in the kitchen located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector defective in the entire apartment located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department the ceiling and south wall in the bathroom located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 4l, 4th story, 2nd apartment from west at north
Sep 1, 2024 · Apt 4L
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective vinyl tiles at floor in the kitchen located at apt 3r, 3rd story, 1st apartment from north at east
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective caulking around sink in the kitchen located at apt 3r, 3rd story, 1st apartment from north at east
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed
Show 34 more ↓
- BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at all walls and ceilings in the bathroom located at apt 3r, 3rd story, 1st apartment from north at east
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of mice in the entire apartment located at apt 3r, 3rd story
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective vinyl tiles at floor in the 3rd room from north located at apt 3r, 3rd story, 1st apartment from north at east
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair or replace the broken or defective closet at east wall in the 3rd room from north located at apt 3r, 3rd story, 1st apartment from north at east
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department all walls and ceilings in the entire apartment located at apt 3r, 3rd story
Oct 17, 2023 · Apt 3R
Closed — Violation dismissed - ANon-hazardous
Discontinue use of interior room for living or provide an alcove opening of at least 32# sq ft to room having a window opening directly to street or yard in the 4th room from north located at apt 3r, 3rd story, 1st apartment from north at east
Apr 18, 2023 · Apt 3R
Closed — Violation dismissed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Feb 25, 2022
Closed — Violation dismissed - ANon-hazardous
§ 329, m/d law and dept. rules and regs. provide a completed certificate of inspection visits in a proper frame at or near mailboxes, bottom edge of frame between 48-62 inches above floor missing at public hall, 1st story
Oct 15, 2021
Closed — Violation closed - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - CImmediately hazardous
Abate the infestation consisting of mice in the entire apartment located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector defective in the entire apartment located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - CImmediately hazardous
Code: arrange and make self-closing the doors , in the entrance located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - ANon-hazardous
Properly repair with similar material the broken or defective ceramic tiles at north wall in the kitchen located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - ANon-hazardous
Paint with light colored paint to the satisfaction of this department at ceiling in the kitchen located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the 5th room from north located at apt 4l, 4th story, 2nd apartment from south at west
Oct 15, 2021 · Apt 4L
Closed — Violation dismissed - ANon-hazardous
Post and maintain a proper sign on wall of entrance story showing the registration number assigned by the department and the address of the building. at public hall, 1st story
Oct 15, 2021
Closed — Violation closed - ANon-hazardous
Post and maintain a proper notice on wall of the entrance story in english and spanish on the availability of the agencys housing information guide. a sample notice can be found at www.nyc.gov/hpd. at public hall, 1st story
Oct 15, 2021
Closed — Violation closed - ANon-hazardous
Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mail box at public hall, 1st story
Oct 15, 2021
Closed — Violation closed - ANon-hazardous
Post a proper notice of carbon monoxide detecting device requirements, in a form approved by the commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in a private dwelling.
Oct 15, 2021
Closed — Violation closed - ANon-hazardous
Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected
Oct 15, 2021
Closed — Violation closed - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 9, 2021
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and all walls in the 4th room from north located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective wood floor in the 4th room from north located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair with similar material the broken or defective vinyl floor tiles in the 4th room from north located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - BHazardous
Properly repair the broken or defective door frame in the 2nd room from north located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and south wall in the bathroom located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - BHazardous
Abate the nuisance consisting of mice in the entire apartment located at apt 3r, 3rd story, 1st apartment from north at east
Jan 12, 2019 · Apt 3R
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 9, 2015
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Feb 23, 2015
Closed — Violation dismissed - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 3r, 3rd story, 1st apartment from east at south
Sep 15, 2011 · Apt 3R
Closed — Violation closed - BHazardous
Replace with new the broken or defective lower sash window glass in the 5th room from east located at apt 3r, 3rd story, 1st apartment from east at south
Sep 15, 2011 · Apt 3R
Closed — Violation closed - BHazardous
Properly repair the broken or defective lower sash at window in the 5th room from east located at apt 3r, 3rd story, 1st apartment from east at south
Sep 15, 2011 · Apt 3R
Closed — Violation closed - BHazardous
Replace with new the missing bathtub spout in the bathroom located at apt 3r, 3rd story, 1st apartment from east at south
Sep 15, 2011 · Apt 3R
Closed — Violation closed
DOB building violations · 6
- Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2010 inspection report
Dec 13, 2011
Dob violation - dismissed - Low pressure boiler boiler required
Lblvio-low pressure boiler boiler required
Dec 31, 2009
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 3, 2008
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 6, 2006
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jul 25, 1994
Dob violation - dismissed - Boiler boiler optional
B-boiler boiler optional
Mar 16, 1991
Vp*-violation unserved ecb- dismissed
ECB violations · 3
- Non-hazardous
Plumbing work without a permit. noted: tubs, toilets & sinks were re- moved on 3rd & 4th floor. gas line on 3rd floor has not been capped off & adjacent apt. is occupied, at said premises. a search of dept
Jun 24, 1999 · Penalty $2,500
Resolve - Non-hazardous
Work without a permit. noted: on 3rd & 4th floors partition walls havebeen removed in several locations in apt facing suydam street. approx.10'feet by 12 feet. new partition walls approx. 10'feet by 12 feet are
Jun 24, 1999 · Penalty $2,500
Resolve - Non-hazardous
32,(32)safety relief is leaking (32)remove wood from blocking fresh air vent
Mar 16, 1991
Resolve
Complaints
- Unsanitary condition
Pests
Aug 26, 2024 · Apt 4L
Close - Water leak
Heavy flow
Oct 12, 2021 · Apt 4L
Close - Heat/hot water
Apartment only
Feb 25, 2019 · Apt 4L
Close - Paint/plaster
Wall
Jan 11, 2019 · Apt 3R
Close - Heat/hot water
Apartment only
Jan 11, 2019 · Apt 3R
Close - Unsanitary condition
Pests
Sep 28, 2017 · Apt 3L
Close - Unsanitary condition
Pests
Jan 17, 2017 · Apt 4L
Close - Flooring/stairs
Floor
Jan 17, 2017 · Apt 4L
Close - Paint/plaster
Ceiling
Jan 17, 2017 · Apt 4L
Close - Plumbing
Water-leaks
Nov 21, 2013 · Apt 3L
Close
Show 14 more ↓
- Plumbing
Water-leaks
Nov 21, 2013 · Apt 3L
Close - Electric
Lighting
Nov 21, 2013 · Apt 3L
Close - Plumbing
Water-leaks
Nov 21, 2013 · Apt 3L
Close - General
Windows
Aug 23, 2011 · Apt 3R
Close - General
Windows
Aug 23, 2011 · Apt 3R
Close - Plumbing
Shower-stall
Aug 23, 2011 · Apt 3R
Close - Plumbing
Shower-stall
Aug 23, 2011 · Apt 3R
Close - Heating
Heat related
Nov 3, 2010 · Apt 3L
Close - Heating
Heat related
Jan 4, 2009 · Apt 4R
Close - Heating
Heat related
Jan 4, 2009 · Apt 4R
Close - Heating
Heat related
Dec 22, 2008 · Apt 4R
Close - Heating
Heat related
Dec 4, 2008 · Apt 4R
Close - Nonconst
Rubbish
Oct 28, 2008 · Apt 4R
Close - Nonconst
Vermin
Oct 28, 2008 · Apt 4R
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Mixed residential and retail building (S5)
- Year built
- 1931
- Floors
- 4
- Residential units
- 6
- Building area
- 6,500 ft²
- Lot area
- 2,500 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 34
- Block / lot
- 3220 / 2
- Assessed value
- $436,950
- Landmark / historic district
- No
HPD registration #330846, last renewed Jul 24, 2025.
Questions about 307 Knickerbocker Avenue
Who owns 307 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Ambrosino Equities LLC.
Does 307 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 44 housing violations at this property.
Is 307 Knickerbocker Avenue rent stabilized?
NYC Department of Finance tax bills listed 6 rent-stabilized units here in 2024 (about 100% of its 6 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 307 Knickerbocker Avenue built?
City records list 1931 as the year it was built.
How many apartments are in 307 Knickerbocker Avenue?
It has 6 residential units and 7 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.