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309 Jefferson Street, Brooklyn, NY 11237

Built 1902 · 4-story walk-up · 8 apartments

1 open violation, none immediately hazardous.

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

Violations issued each year

None issued since 2022. 37 violations before that, the first in 1988.

See every violation
Open per apartment
0.1 (1 open across 8 apartments)
Inspector last found a problem
12 May 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

This building is not on the state's list of buildings with rent-stabilized apartments for 2024. That is not proof none are: an owner who did not register is missing from the list too.

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

Hazardous1 open

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

  • Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment, 4th story

    Issued 12 May 2021Notice certified late 21 Jun 2023Fire and safety equipment§ 27-2046.1

36 closed violations, plus 14 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.

  • Repair or replace the smoke detector missing in the entire apartment, 4th story

    Issued 12 May 2021Violation dismissed 17 Sept 2023Fire and safety equipment§ 27-2045

  • Replace or repair the self-closing doors that is missing or defective at entrance, 4th story

    Issued 12 May 2021Violation dismissed 11 Sept 2023Fire and safety equipment§ 27-2005 +2

  • Abate the nuisance consisting of central air conditioner units installed at rear yard

    Issued 24 Apr 2019Violation dismissed 14 Jul 2019Roof and outside the building§ 27-2005 +1

  • Fire escape defective. replace with new the broken, defective and/or missing gusset plates at all stories balcony fire escape at building rear

    Issued 24 Apr 2019Violation dismissed 14 Jul 2019Fire and safety equipment§ 27-2005

  • 187, 231 m/d law and department rules and regulations. provide a shoe properly secured to bottom of string of dropladder at building rear

    Issued 24 Apr 2019Violation dismissed 14 Jul 2019§ 53

  • Abate the nuisance consisting of wood staircase installed under dropladder at the rear of the building

    Issued 24 Apr 2019Violation dismissed 14 Jul 2019Floors and stairs§ 27-2005 +1

  • Properly repair the broken or defective wood floor all rooms 4 sty an apartment., section '' ''

    Issued 18 Jul 1995Violation dismissed 9 May 2019Floors and stairs§ D26-10.01

  • And dept. rules and regulations. scrape and remove rust scales and paint with 2 coats of paint rear fire escape-all stories

    Issued 8 Aug 2016Violation dismissed 8 May 2019Fire and safety equipment§ 27-2014

  • Repair or replace the smoke detector defective, 4th story at east

    Issued 8 Aug 2016Violation dismissed 1 May 2019Fire and safety equipment§ 27-2045

  • Repair or replace the carbon monoxide detecting device(s). defective, 4th story at east

    Issued 8 Aug 2016Violation dismissed 1 May 2019Fire and safety equipment§ 27-2046.1

  • Repair or replace the smoke detector defective in the entire apartment, 4th story

    Issued 3 Jul 2016Violation dismissed 1 May 2019Fire and safety equipment§ 27-2045

  • Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. in the entire apartment, 4th story

    Issued 3 Jul 2016Violation dismissed 1 May 2019Fire and safety equipment§ 27-2046.1

  • Arrange and make self-closing the doors entrance 1 sty west an apartment.

    Issued 14 Jul 1995Violation closed 29 Apr 2019Fire and safety equipment§ D26-10.01 +1

  • Fire escape defective. adjust the dropladder so that it will slide easily in the guide rods at rear-2nd story at fire escape

    Issued 8 Aug 2016Violation closed 24 Apr 2019Fire and safety equipment§ 27-2005

  • Arrange and make self-closing the doors entrance to 3 sty east an apartment., section '' ''

    Issued 14 Jul 1995Violation dismissed 8 Sept 2016Fire and safety equipment§ 27-2005 +1

  • 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 3 Jul 2016Violation closed 25 Aug 2016Heat and hot water§ 27-2033

  • Repair or replace the smoke detector defective in the entire apartment, 1st story

    Issued 3 Jul 2016Violation closed 25 Aug 2016Fire and safety equipment§ 27-2045

  • Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. in the entire apartment, 1st story

    Issued 3 Jul 2016Violation closed 25 Aug 2016Fire and safety equipment§ 27-2046.1

  • Remove the illegal fastening lockable slide bolt installed on door at bulkhead to roof, 4th story

    Issued 31 Mar 2015Violation closed 25 Aug 2016Roof and outside the building§ 27-2005 +1

  • Abate the nuisance consisting of heater vent protruding beyond window sills at 2nd story, 3rd story, and at 4th stories balconies at rear at fire escape

    Issued 17 May 2002Violation closed 25 Aug 2016Fire and safety equipment§ 27-2005 +1

  • Dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes ventalation pipes all stories balcony at rear

    Issued 6 Apr 2002Violation closed 25 Aug 2016Fire and safety equipment§ 27-2005 +1

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

    Issued 24 Dec 1995Violation closed 25 Aug 2016Heat and hot water§ 27-2033

  • Arrange and make self-closing the doors entrance to 3 sty west an apartment.

    Issued 14 Jul 1995Violation closed 25 Aug 2016Fire and safety equipment§ 27-2005 +1

  • Properly repair the broken or defective terra cotta coping at roof thru out.

    Issued 2 Feb 1988Violation closed 25 Aug 2016Roof and outside the building§ 27-2005

  • Replace with new the broken or defective ceramic floor tile (approx. 4 square feet) at public hall, 1st story

    Issued 27 Jul 2016Violation closed 17 Aug 2016Floors and stairs§ 27-2005

  • Properly repair the broken or defective paving cellar thru out.

    Issued 14 Jul 1995Violation closed 8 Aug 2016§ D26-10.01

  • Properly repair the broken or defective paving rear yard.

    Issued 2 Feb 1988Violation closed 8 Aug 2016Roof and outside the building§ 27-2005

  • Abate the nuisance consisting of uncapped radiator pipe at public hall, 1st story

    Issued 3 Jul 2016Violation closed 27 Jul 2016Heat and hot water§ 27-2005 +1

  • Abate the nuisance consisting of vermin mice & roaches thru out room 4 sty west an apartment., section '' ''

    Issued 14 Jul 1995Violation closed 4 Jul 2016Pests§ D26-13.03

  • Arrange and make self-closing the doors entrance 1 sty east an apartment.

    Issued 14 Jul 1995Violation closed 4 Jul 2016Fire and safety equipment§ D26-10.01 +1

  • Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following 100 watts. lights not on.

    Issued 11 Jul 2004Violation closed 2 Apr 2015Electrical§ 27-2040

  • Repair the broken or defective plastered surfaces and paint in a uniform color the north walls near baseboard in the entire apartment, 2nd story

    Issued 17 May 2002Violation closed 2 Apr 2015Walls and ceilings§ 27-2005

  • Arrange and make self-closing the doors vestibule to 1 sty pubic hall.

    Issued 14 Jul 1995Violation dismissed 2 Apr 2015Fire and safety equipment§ 27-2005 +1

  • Remove the illegal fastening eye hook assembly entrance door bulkhead roof.

    Issued 14 Jul 1995Violation closed 2 Apr 2015Roof and outside the building§ 27-2005 +1

  • Arrange and make self-closing the doors public hall bulkhead to roof.

    Issued 2 Feb 1988Violation closed 2 Apr 2015Fire and safety equipment§ 27-2005 +1

  • Remove all obstructions and repair all defects in water closet 2 sty east an apartment bathroom.

    Issued 2 Feb 1988Violation closed 2 Apr 2015§ 27-2026

51 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.

1 complaint in three years, 1 of them in the last twelve months.

  • Noise1 / 1

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.

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 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 5 earlier reports
  • 2025No infested units reported (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 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

    309 JEFFERSON APT LLC

    Public records list 309 JEFFERSON APT LLC as the owner of record and the registered managing agent for this address as of 5 Oct 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 has 1 open hazardous violation on this building. Ask which apartment it concerns and what has been done since.
  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 3031660045 · Block 3166, Lot 45 · Building class C1