307 Knickerbocker Avenue, Brooklyn, NY 11237
Built 1931 · 4-story walk-up with stores · 6 apartments
No open housing violations. On the state's rent-stabilization list for 2024.
- Tenant reviews
- None yetLived here? Reviews open soon.
- Open violations
- None openNo open housing violations on record.
- Public record
- Updated yesterdayFrom the city’s own data (, 311, the courts), refreshed nightly.
Violations issued each year
| Year | Hazardous | Non-hazardous |
|---|---|---|
| 2022 | 0 | 0 |
| 2023 | 6 | 2 |
| 2024 | 5 | 1 |
| 2025 | 0 | 0 |
| 2026 so far | 0 | 0 |
Plus 18 violations from 2011 to 2021. Counted when issued, whether open or fixed since. Paperwork left out.
See every violation- Found most often since 2022
- Walls and ceilings 4
- Floors and stairs 3
- Pests 3
- Inspector last found a problem
- 1 Sept 2024 (visits that find nothing are not published)
What do these labels mean?Where each of these comes from
- Tenant-reported
- A resident's firsthand account of living here, moderated before it publishes, and labelled with whether we verified they lived there.
- Official violation
- A city inspector visited and recorded a code violation. HPD's own words, and its own hazard class.
- Public complaint
- A complaint somebody made to a city system, through HPD or 311. A report, not a finding: nobody has necessarily inspected it.
- Public filing
- A permit, a registration, a bedbug report: a document the owner filed with the city because the law requires it.
- Court record
- A Housing Court case HPD brought against the owner, or an eviction a city marshal carried out. A court's record: a case is an allegation until it ends in a finding.
- Insufficient data
- Not enough current information here to infer a pattern either way.
Tenant reviews
Tenant-reportedNo tenant reviews yet. Lived here? Be the first.
Nothing above this section came from a tenant. It is all filed by the city, which means it only holds what somebody reported and an inspector wrote down, not what it is actually like to live here.
Not open yet. Reviews open when this neighbourhood does.
Heat season
No heat or hot-water complaints or violations were recorded here last winter (2025–26). That is the city's record: it only holds what somebody reported.
| Winter | DaysDays with complaints | Complaints | Violations |
|---|---|---|---|
| 2025–26 | 0 | 0 | 0 |
The rules, 1 October to 31 May: from 6am to 10pm, when it is below 55°F outside, the apartment must be at least 68°F; overnight it must be at least 62°F whatever the weather. Hot water must be at least 120°F all year. A tenant without heat can report it to 311.
Rent stabilization
Public filingThe owner registered at least one rent-stabilized apartment here with the state for 2024. The list does not say which apartments, or how many.
Source: Rent Guidelines Board building list, from the state's 2024 registrations. To know about one apartment, a tenant can ask the state for its rent history through Ask HCR.
City violations
Official violationNothing open. 44 violations in the record, all of them closed.
32 closed violations, plus 12 closed paperwork filingsShow fewer
Closed means HPD recorded the violation as corrected, or dismissed it. Both appear here, because the difference matters and only HPD’s own status line says which it was.
Repair or replace the smoke detector defective in the entire apartment, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Fire and safety equipment§ 27-2045
Paint with light colored paint to the satisfaction of this department the ceiling and south wall in the bathroom, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Walls and ceilings§ 27-2013
Abate the infestation consisting of mice in the entire apartment, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Pests§ 27-2017.4
Abate the infestation consisting of roaches in the entire apartment, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Pests§ 27-2017.4
Properly repair with similar material the broken or defective wood floor in the kitchen, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Floors and stairs§ 27-2005
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment, 4th story at north
Issued 1 Sept 2024Violation dismissed 28 Nov 2024Fire and safety equipment§ 27-2046.1
Repair the broken or defective plastered surfaces and paint in a uniform color at all walls and ceilings in the bathroom, 3rd story at east
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Walls and ceilings§ 27-2005
Properly repair with similar material the broken or defective vinyl tiles at floor in the kitchen, 3rd story at east
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Floors and stairs§ 27-2005
Properly repair or replace the broken or defective closet at east wall in the 3rd room from north, 3rd story at east
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Walls and ceilings§ 27-2005
Properly repair with similar material the broken or defective vinyl tiles at floor in the 3rd room from north, 3rd story at east
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Floors and stairs§ 27-2005
Properly repair with similar material the broken or defective caulking around sink in the kitchen, 3rd story at east
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Leaks and plumbing§ 27-2005
Paint with light colored paint to the satisfaction of this department all walls and ceilings in the entire apartment, 3rd story
Issued 17 Oct 2023Violation dismissed 8 Feb 2024Walls and ceilings§ 27-2013
Abate the infestation consisting of mice in the entire apartment, 3rd story
Issued 17 Oct 2023Violation dismissed 21 Jan 2024Pests§ 27-2017.4
Replace with new the missing bathtub spout in the bathroom, 3rd story at south
Issued 15 Sept 2011Violation closed 22 Oct 2023Leaks and plumbing§ 27-2005
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, 3rd story at east
Issued 18 Apr 2023Violation dismissed 17 Oct 2023Roof and outside the building§ 27-2059
Repair or replace the smoke detector missing in the entire apartment, 3rd story at south
Issued 15 Sept 2011Violation closed 27 Apr 2023Fire and safety equipment§ 27-2045
Replace with new the broken or defective lower sash window glass in the 5th room from east, 3rd story at south
Issued 15 Sept 2011Violation closed 27 Apr 2023Doors and windows§ 27-2005
Properly repair the broken or defective lower sash at window in the 5th room from east, 3rd story at south
Issued 15 Sept 2011Violation closed 27 Apr 2023Doors and windows§ 27-2005
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the 5th room from north, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Walls and ceilings§ 27-2005
Paint with light colored paint to the satisfaction of this department at ceiling in the kitchen, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Walls and ceilings§ 27-2013
Properly repair with similar material the broken or defective ceramic tiles at north wall in the kitchen, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Walls and ceilings§ 27-2005
Arrange and make self-closing the doors, in the entrance, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Fire and safety equipment§ 27-2005
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Fire and safety equipment§ 27-2046.1
Repair or replace the smoke detector defective in the entire apartment, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Fire and safety equipment§ 27-2045
Abate the infestation consisting of mice in the entire apartment, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Pests§ 27-2017.4
Abate the infestation consisting of roaches in the entire apartment, 4th story at west
Issued 15 Oct 2021Violation dismissed 30 Jan 2022Pests§ 27-2017.4
Abate the nuisance consisting of mice in the entire apartment, 3rd story at east
Issued 12 Jan 2019Violation dismissed 9 May 2019Pests§ 27-2018
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and south wall in the bathroom, 3rd story at east
Issued 12 Jan 2019Violation dismissed 28 Apr 2019Walls and ceilings§ 27-2005
Properly repair the broken or defective door frame in the 2nd room from north, 3rd story at east
Issued 12 Jan 2019Violation dismissed 28 Apr 2019Doors and windows§ 27-2005
Properly repair with similar material the broken or defective vinyl floor tiles in the 4th room from north, 3rd story at east
Issued 12 Jan 2019Violation dismissed 28 Apr 2019Floors and stairs§ 27-2005
Properly repair with similar material the broken or defective wood floor in the 4th room from north, 3rd story at east
Issued 12 Jan 2019Violation dismissed 28 Apr 2019Floors and stairs§ 27-2005
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling and all walls in the 4th room from north, 3rd story at east
Issued 12 Jan 2019Violation dismissed 28 Apr 2019Walls and ceilings§ 27-2005
44 violations on record in total, 0 of them open. The count at the top of this page counts habitability violations only.
Complaints to the city
Public complaintComplaints are reports made to the city. They are not confirmed findings. They come from HPD and from 311, and the same problem can appear more than once if more than one neighbour called.
1 complaint in three years, 0 of them in the last twelve months.
- Pests0 / 1
Last twelve months / last three years. The solid part of each bar is the last twelve months.
Court records
Court recordHousing Court cases
Cases the city’s housing department (HPD) brought against the owner, usually to force repairs or restore heat. A case is an allegation; where the court recorded an outcome, it is shown.
No HPD Housing Court cases on record for this building.
Evictions
Residential evictions carried out by a city marshal since 2017. Most follow a case for unpaid rent, so a count here is not by itself a finding about the building or the landlord. We show how many, never which apartment.
No marshal evictions recorded at this building since 2017.
Filings
Public filingBuilding permits
No DOB permits filed for this building in the last five years.
Annual bedbug report
Every multiple dwelling in New York must file this once a year. A report of zero infested units is good news. No report is not: failing to file is itself a violation.
- 20261 of 6 units reported infested (2024 report)
Show 5 earlier reportsShow fewer
- 20251 of 6 units reported infested (2023 report)
- 2024No infested units reported (2022 report)
- 2023No infested units reported (2021 report)
- 2022No infested units reported (2020 report)
- 2021No infested units reported (2019 report)
Ownership and management
Public filingAssociations come from registration records and may be incomplete. Owners register with HPD once a year, so a change of hands can go unrecorded for a full cycle.
Owner of record and managing agent
AMBROSINO EQUITIES LLC
Public records list AMBROSINO EQUITIES LLC as the owner of record and the registered managing agent for this address as of 23 Jul 2025. Source: HPD registration.
Wrong company, wrong date, or a change that is not reflected here? Report a correction.
What to ask at the viewing
307 Knickerbocker Avenue, Brooklyn, NY 11237
Drawn from this building’s record above. They are questions, not conclusions: the point is to find out, in the twenty minutes you get inside, what the public record cannot tell you.
- The owner has filed a bedbug report for this building (most recently for the year ending 2026). Ask when the building was last treated, how often an exterminator comes, and whether treatment covers the whole line of apartments or only the one that complained.
- Ask what the deposit is, exactly what can be deducted from it, and how and when it comes back.
- Ask who to call when something breaks, what happens after hours and at weekends, and how long a repair normally takes.
Ask for anything that matters in writing; an email after the viewing is enough. We are not your lawyer and this is not legal advice.
Questions about this building
No. HPD lists no open housing violations here. Paperwork filings, such as a late registration, are not counted.
Since 2022, HPD inspectors have written the most violations here for walls and ceilings (4), floors and stairs (3) and pests (3).
On 1 Sept 2024. HPD only publishes inspections that found something, so a later visit that found nothing would not show here.
The owner registered at least one rent-stabilized apartment here with the state for 2024. The list does not say which apartments. A tenant can ask the state for an apartment's rent history to be sure.
No heat or hot-water complaints or violations were recorded here in the 2025–26 heat season.
No residential evictions by a city marshal are recorded here since 2017.
Not yet. Reviews come from people who lived here, and none has been published for this building.
BBL 3032200002 · Block 3220, Lot 2 · Building class S5