299 Knickerbocker Avenue, Brooklyn, NY 11237
Built 1931 · 4-story walk-up with stores · 18 apartments
5 immediately hazardous violations open. 6 open in all. On the state's rent-stabilization list for 2024.
- Tenant reviews
- None yetLived here? Reviews open soon.
- Open violations
- 65 · 1
- Public record
- Updated todayFrom the city’s own data (, 311, the courts), refreshed nightly.
Violations issued each year
| Year | Hazardous | Non-hazardous |
|---|---|---|
| 2022 | 0 | 0 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 so far | 0 | 0 |
Plus 7 violations from 2017 to 2021. Counted when issued, whether open or fixed since. Paperwork left out.
See every violation- Found most often since 2022
- Heat and hot water 3
- Open per apartment
- 0.3 (6 open across 18 apartments)
- Inspector last found a problem
- 25 Apr 2023 (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 violationImmediately hazardous5 open
Class C. HPD considers the condition an immediate danger: no heat in winter, no hot water, lead paint where a child lives, a broken lock on the front door. The owner has 24 hours to correct it.
Provide hot water at all hot water fixtures in the bathroom, 4th story at west
Issued 25 Apr 2023Notice sent out 25 Apr 2023Heat and hot water§ 27-2031
Provide ready access to buildings heating system no access to boiler at boiler room, 1st story
Issued 25 Apr 2023Notice sent out 18 May 2023Heat and hot water§ 27-2033
Provide hot water at all hot water fixtures in the entire apartment, 4th story at west
Issued 28 Mar 2023Notice certified late 16 Apr 2023Heat and hot water§ 27-2031
Remove the illegal fastening consisting of an unacceptable electromagnetic locking device install at the building entrance door at public hall, 1st story
Issued 4 Dec 2017Notice sent out 1 Mar 2022Doors and windows§ 27-2005 +1
Provide ready access to buildings heating system boiler room door locked at cellar
Issued 4 Dec 2017Not complied with 10 Apr 2022Heat and hot water§ 27-2033
Hazardous1 open
Class B. A hazardous condition: a leak, mould, a defective floor. The owner has 30 days to correct it.
Provide security in the event of a power outage by means of an acceptable mechanical heavy duty lock and latch set at the building entrance door at public hall, 1st story
Issued 4 Dec 2017Notice sent out 1 Mar 2022Electrical§ 27-2005
4 closed violations, plus 4 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 carbon monoxide detecting device(s). missing in the entire apartment, 2nd story at east
Issued 4 Dec 2017Violation dismissed 8 Jun 2022Fire and safety equipment§ 27-2046.1
Repair or replace the smoke detector missing in the entire apartment, 2nd story at east
Issued 4 Dec 2017Violation dismissed 8 Jun 2022Fire and safety equipment§ 27-2045
Post notice, in form approved by the department, stating the name and location of the person designated by the owner to have key to buildings heating system at public hall, 1st story
Issued 4 Dec 2017Violation closed 10 Apr 2022Heat and hot water§ 27-2033
Provide hot water at all hot water fixtures in the entire apartment, 2nd story at east
Issued 4 Dec 2017Violation closed 13 Dec 2017Heat and hot water§ 27-2031
14 violations on record in total, 6 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.
10 complaints in three years, 10 of them in the last twelve months.
- Noise8 / 8
- Garbage and cleanliness2 / 2
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.
2 cases, all closed.
Heat and Hot Water
Opened 12 May 2023
Heat and Hot Water
Opened 26 Jan 2018
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 permit currently in force. 1 permit filed in the last five years.
Show 1 expired or finishedShow fewer
Plumbing
Subsequent Job to Legalize a (2) Piece Bathroom in conjunction with Plumbing Job B00650215-I1 and General Construction Job B00691038-I1.
Issued 4 May 2022Expired 7 May 2022
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.
- 2026No infested units reported (2024 report)
Show 6 earlier reportsShow fewer
- 2024No infested units reported (2023 report)
- 2023No infested units reported (2022 report)
- 2022No infested units reported (2021 report)
- 2022No 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.
Registered managing agent
RENAISSANCE REALTY GROUP LLC
Public records list RENAISSANCE REALTY GROUP LLC as the registered managing agent for this address as of 1 Sept 2026. Source: HPD registration.
Other buildings listed under this agent (1 in the records we hold)
- 323 Knickerbocker Avenue2 open violations · no reviews yet
No combined rating for this agent yet. A portfolio rating needs at least 5 verified reviews across 2 or more buildings; currently 0.
Owner of record
293-299 KNICKERBOCKER LLC
Public records list 293-299 KNICKERBOCKER LLC as the owner of record for this address as of 1 Sept 2026. Source: HPD registration.
Wrong company, wrong date, or a change that is not reflected here? Report a correction.
What to ask at the viewing
299 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 city currently has 5 open immediately-hazardous violations on this building. Ask which apartments they concern, how many are in the one you would be renting, and when HPD re-inspects.
- 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
Yes. HPD lists 6 open housing violations: 5 immediately hazardous, 1 hazardous and 0 non-hazardous. Paperwork filings, such as a late registration, are not counted.
Since 2022, HPD inspectors have written the most violations here for heat and hot water (3).
On 25 Apr 2023. 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 3032200005 · Block 3220, Lot 5 · Building class C7