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803 Knickerbocker Avenue, Brooklyn, NY 11237

Built 2013 · 6-story elevator building with stores · 24 apartments

2 immediately hazardous violations open. 4 open in all. On the state's rent-stabilization list for 2024.

Tenant reviews
None yetLived here? Reviews open soon.
Open violations
42 · 2
Public record
Updated todayFrom the city’s own data (, 311, the courts), refreshed nightly.

Violations issued each year

Violations issued each year
YearHazardousNon-hazardous
202200
2023111
2024120
2025110
2026 so far20

Plus 13 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 31
  • Fire and safety equipment 3
  • Pests 2
Open per apartment
0.2 (4 open across 24 apartments)
Inspector last found a problem
2 Aug 2026 (visits that find nothing are not published)
What do these labels mean?
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-reported

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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.

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Heat season

Last winter (2025–26), the city received heat or hot-water complaints about this building on 17 days, and inspectors issued 1 violation.

WinterDaysComplaintsViolations
2025–2617271

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 filing

The 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 violation

Immediately hazardous2 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 entire apartment, 4th story at south

    Issued 31 Oct 2025Notice sent out 2 Nov 2025Heat and hot water§ 27-2031

  • Abate the infestation consisting of roaches in the entire apartment, 4th story at south

    Issued 31 Oct 2025Notice of issuance sent to tenant 2 Nov 2025Pests§ 27-2017.4

Hazardous2 open

Class B. A hazardous condition: a leak, mould, a defective floor. The owner has 30 days to correct it.

  • Repair, replace or provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules defective in the entire apartment, 4th story at south

    Issued 31 Oct 2025Notice sent out 2 Nov 2025Fire and safety equipment§ 27-2045 +3

  • Repair, replace or provide an approved and operational smoke detecting device, installed in accordance with department of buildings rules and regulations defective in the entire apartment, 4th story at south

    Issued 31 Oct 2025Notice sent out 2 Nov 2025Fire and safety equipment§ 27-2045 +2

46 closed violations, plus 1 closed paperwork filings

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.

  • ×2Provide ready access to buildings heating system door locked at basement at boiler room

    2 issued 30 Jan 2025 to 1 Aug 2026Violation closedHeat and hot water§ 27-2033

  • Provide hot water at all hot water fixtures in the kitchen, 3rd story at west

    Issued 2 Aug 2026Violation closed 25 Aug 2026Heat and hot water§ 27-2031

  • Abate the infestation consisting of roaches in the entire apartment, 4th story at south

    Issued 30 Nov 2023Violation closed 6 Oct 2025Pests§ 27-2017.4

  • ×3Provide ready access to buildings heating system door locked at boiler room, 6th story

    3 issued 26 Nov 2024 to 27 Jan 2025Violation closedHeat and hot water§ 27-2033

  • ×2Provide hot water at all hot water fixtures in the entire apartment, 4th story at south

    2 issued 30 Nov 2023 to 27 Jan 2025Violation closedHeat and hot water§ 27-2031

  • Provide hot water at all hot water fixtures in the entire apartment, 4th story at east

    Issued 12 Jan 2025Violation closed 1 Sept 2025Heat and hot water§ 27-2031

  • ×3Provide hot water at all hot water fixtures in the entire apartment, 5th story at west

    3 issued 7 Jan 2021 to 3 Jan 2025Violation closedHeat and hot water§ 27-2031

  • Provide hot water at all hot water fixtures in the entire apartment, 3rd story at south

    Issued 26 Nov 2024Violation closed 1 Sept 2025Heat and hot water§ 27-2031

  • ×3Provide hot water at all hot water fixtures in the entire apartment, 4th story at west

    3 issued 17 Jan 2021 to 12 Feb 2024Violation closedHeat and hot water§ 27-2031

  • ×2Provide hot water at all hot water fixtures in the entire apartment, 5th story at north

    2 issued 28 Jan 2024 to 5 Feb 2024Violation closedHeat and hot water§ 27-2031

  • Properly repair with similar material the broken or defective caulking around bathtub and wash basin in the bathroom, 2nd story at east

    Issued 28 Nov 2023Violation closed 1 Sept 2025Leaks and plumbing§ 27-2005

  • Provide an adequate supply of heat for the apartment in the entire apartment, 5th story at east

    Issued 12 Jan 2021Violation dismissed 1 Sept 2025Heat and hot water§ 27-2029

  • Provide hot water at all hot water fixtures in the entire apartment, 2nd story at south

    Issued 30 Jan 2025Violation closed 7 Mar 2025Heat and hot water§ 27-2031

  • Provide ready access to buildings heating system door locked to cellar at public hall, 1st story

    Issued 2 Mar 2024Violation closed 28 Oct 2024Heat and hot water§ 27-2033

  • ×3Provide ready access to buildings heating system door locked at boiler room

    3 issued 24 Nov 2023 to 12 Feb 2024Violation closedHeat and hot water§ 27-2033

  • ×2Provide ready access to buildings heating system locked door at boiler room

    2 issued 30 Jan 2024 to 5 Feb 2024Violation closedHeat and hot water§ 27-2033

  • Provide ready access to buildings heating system locked door from 1 story public hall to celler at boiler room, 5th story

    Issued 31 Dec 2023Violation closed 28 Oct 2024Heat and hot water§ 27-2033

  • Remove device preventing door from being self-closing kickstand at boileroom door at boiler room

    Issued 30 Nov 2023Violation closed 28 Oct 2024Fire and safety equipment§ 27-2005 +1

  • Provide ready access to buildings heating system boiler room door locked at basement at boiler room

    Issued 28 Nov 2023Violation closed 28 Oct 2024Heat and hot water§ 27-2033

  • ×4Provide hot water at all hot water fixtures in the entire apartment, 2nd story at east

    4 issued 28 Nov 2023 to 2 Mar 2024Violation closedHeat and hot water§ 27-2031

  • Provide hot water at all hot water fixtures in the entire apartment, 2nd story at south

    Issued 31 Dec 2023Violation dismissed 18 Feb 2024Heat and hot water§ 27-2031

  • Provide ready access to buildings heating system locked door at cellar

    Issued 17 Jan 2021Violation closed 5 Apr 2021Heat and hot water§ 27-2033

  • Provide ready access to buildings heating system door locked in boiler room at cellar

    Issued 12 Jan 2021Violation closed 5 Apr 2021Heat and hot water§ 27-2033

  • Provide an adequate supply of heat for the apartment in the entire apartment, 4th story at west

    Issued 17 Jan 2021Violation closed 10 Feb 2021Heat and hot water§ 27-2029

  • Provide hot water at all hot water fixtures in the entire apartment, 5th story at east

    Issued 12 Jan 2021Violation closed 5 Feb 2021Heat and hot water§ 27-2031

  • Provide adequate supply of hot water for the fixtures in the bathroom and kitchen, 2nd story at south

    Issued 9 Jan 2021Violation closed 5 Feb 2021Heat and hot water§ 27-2024

  • Provide an adequate supply of heat from an approved central heating system, or an approved system of gas or electrical heating in good operating condition for the dwelling unit in the entire apartment, 2nd story at south

    Issued 9 Jan 2021Violation closed 2 Feb 2021Heat and hot water§ 27-2028 +1

  • Provide hot water at all hot water fixtures in the entire apartment, 5th story at south

    Issued 7 Jan 2021Violation closed 1 Feb 2021Heat and hot water§ 27-2031

  • Provide hot water at all hot water fixtures in the entire apartment, 2nd story at north

    Issued 22 Mar 2018Violation closed 27 Mar 2018Heat and hot water§ 27-2031

  • Provide hot water at all hot water fixtures in the entire apartment, 4th story

    Issued 23 Dec 2017Violation dismissed 11 Mar 2018Heat and hot water§ 27-2031

  • Provide ready access to buildings heating system lock door at cellar

    Issued 23 Dec 2017Violation closed 1 Mar 2018Heat and hot water§ 27-2033

51 violations on record in total, 4 of them open. The count at the top of this page counts habitability violations only.

Complaints to the city

Public complaint

Complaints 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.

307 complaints in three years, 43 of them in the last twelve months.

  • Heat and hot water33 / 279
  • Garbage and cleanliness2 / 9
  • Leaks and plumbing6 / 8
  • Pests0 / 4
  • Fire and safety equipment0 / 3
  • Elevator1 / 2
  • Paperwork and notices1 / 2

Last twelve months / last three years. The solid part of each bar is the last twelve months.

Court records

Court record

Housing 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.

4 cases, all closed.

  • Heat and Hot Water

    Opened 28 May 2025

  • Heat and Hot Water

    Opened 12 Mar 2024

  • Heat and Hot Water

    Opened 28 Apr 2021

  • Heat and Hot Water

    Opened 2 Feb 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 filing

Building 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.

  • 2026No infested units reported (2024 report)
Show 6 earlier reports
  • 2025No infested units reported (2023 report)
  • 2024No infested units reported (2023 report)
  • 2023No infested units reported (2022 report)
  • 2023No infested units reported (2021 report)
  • 2021No infested units reported (2020 report)
  • 2021No infested units reported (2019 report)

Ownership and management

Public filing

Associations 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

    RISEBORO COMMUNITY PARTNERSHIP

    Public records list RISEBORO COMMUNITY PARTNERSHIP as the registered managing agent for this address as of 24 Sept 2025. Source: HPD registration.

    Other buildings listed under this agent (57 in the records we hold, 10 shown)

    Show 7 more

    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

    KNICKERBOCKER COMMONS HDFC

    Public records list KNICKERBOCKER COMMONS HDFC as the owner of record for this address as of 24 Sept 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

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.

  1. The city currently has 2 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.
  2. There were 33 heat or hot-water complaints here in the last twelve months. Ask who handles heat, how quickly it is usually restored, and whether the boiler has been replaced.
  3. 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.
  4. There has been 1 elevator complaint in the last twelve months in a 6-storey building. Ask how long outages usually last and whether there is a second elevator.
  5. Ask what the deposit is, exactly what can be deducted from it, and how and when it comes back.
  6. 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

BBL 3034130005 · Block 3413, Lot 5 · Building class D7