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863 Onderdonk Avenue, Ridgewood, NY 11385

Built 1913 · 3-story walk-up · 6 apartments

1 immediately hazardous violation open. On the state's rent-stabilization list for 2024.

Tenant reviews
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Open violations
11
Public record
Updated todayFrom the city’s own data (, 311, the courts), refreshed nightly.

Violations issued each year

None issued since 2022. 15 violations before that, the first in 2018.

See every violation
Open per apartment
0.2 (1 open across 6 apartments)
Inspector last found a problem
7 Jul 2021 (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

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.

WinterDaysComplaintsViolations
2025–26000

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 hazardous1 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.

  • Remove the illegal double cylinder key operated locking device at door.. in the entrance, 2nd story at south

    Issued 5 Dec 2018Notice sent out 6 Dec 2018Doors and windows§ 27-2005

14 closed violations, plus 7 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.

  • Abate the infestation consisting of mice in the entire apartment, 2nd story at south

    Issued 7 Jul 2021Violation dismissed 14 Oct 2021Pests§ 27-2017.4

  • Replace with new the missing toe kick at sink base cabinet in the kitchen, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Leaks and plumbing§ 27-2005

  • Abate the infestation consisting of mice in the entire apartment, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Pests§ 27-2017.4

  • Arrange and make self-closing the doors.. in the entrance, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Fire and safety equipment§ 27-2005 +1

  • Install the missing or repair/replace the defective window guard(s) in accordance with the specifications of the new york city health code section 24 rcny chapter 12. wg to install = 1; wg to replace = 1; wg to repair = 4; missing one way screws, window stops and metal side in 1 a/c plates in the entire apartment, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Fire and safety equipment§ 27-2043.1

  • Arrange and make self-closing the doors fire egress door in the 5th room from north, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Fire and safety equipment§ 27-2005 +1

  • Abate the nuisance consisting of extenshion cord being run across the east wall in the kitchen, 2nd story at east

    Issued 9 Jun 2019Violation dismissed 10 Sept 2019Walls and ceilings§ 27-2005 +1

  • Properly repair the broken or defective electrical outlet at south wall in the 4th room from north, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Electrical§ 27-2005

  • Abate the nuisance consisting of mice in the entire apartment, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Pests§ 27-2018

  • Remove all obstructions and repair all defects in the wasteline at sink in the kitchen, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Leaks and plumbing§ 27-2026

  • Properly repair the broken or defective electrical outlet at east wall in the kitchen, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Electrical§ 27-2005

  • Properly repair and abate unsafe electric wiring condition consisting of exposed electrical wires at ceiling in the bathroom, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Electrical§ 27-2005

  • Paint with light colored paint to the satisfaction of this department the ceiling in the bathroom, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Walls and ceilings§ 27-2013

  • Replace with new the missing door in the 3rd room from north, 2nd story at south

    Issued 2 Sept 2018Violation closed 5 Dec 2018Doors and windows§ 27-2005

22 violations on record in total, 1 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.

No complaints from this building in the last three years. Worth knowing what that does and does not mean: tenants who expect nothing to happen often stop calling.

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.

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.

  • 20242 evictions

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.

  • 2025No infested units reported (2024 report)
Show 7 earlier reports
  • 2024No infested units reported (2023 report)
  • 2023No infested units reported (2022 report)
  • 2022No infested units reported (2021 report)
  • 2021No infested units reported (2020 report)
  • 2021No infested units reported (2019 report)
  • 2019No infested units reported (2018 report)
  • 2019No infested units reported (2017 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.

  • Owner of record and managing agent

    ROBERT MADZIAR

    Public records list ROBERT MADZIAR as the owner of record and the registered managing agent for this address as of 29 Jul 2026. Source: HPD registration.

  • Owner of record

    MIROSLAW BARTNIK

    Public records list MIROSLAW BARTNIK as the owner of record for this address as of 29 Jul 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

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 one open immediately-hazardous violation on this building. Ask which apartment it concerns, whether it has been corrected, and when HPD re-inspects.
  2. The owner has filed a bedbug report for this building (most recently for the year ending 2025). 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.
  3. Ask what the deposit is, exactly what can be deducted from it, and how and when it comes back.
  4. 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 4034730071 · Block 3473, Lot 71 · Building class C2