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4307 12 Avenue

Brooklyn, NY 11219BBL 3-05604-0006Map

Owner of record: Mazel 12 Av LLC

4307 12 Avenue is a walk-up apartment building built in 1916 in Brooklyn, 11219. It has 16 residential units across 4 floors. The owner of record is Mazel 12 Av LLC. HPD has recorded 317 housing violations here, most recently on October 20, 2026. 16 of the 50 most recent violations are still open. City tax records listed 16 rent-stabilized apartments here in 2024.

HPD violations
317
DOB violations
11
ECB violations
13
HPD complaints
556

What to know

Concern
7 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Oct 20, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

Rent-stabilized units in 2024
16
About 100% of the building's 16 apartments

Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.

Stabilized units by tax-bill year

Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 317

  • B

    Repair the roof so that it will not leak over ceiling in the 4th room from east at south located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Nov sent out
  • C

    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 = 0, wg to repair = 0 in the entire apartment located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Nov sent out
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Notice of issuance sent to tenant
  • B

    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 located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Nov sent out
  • B

    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 located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Nov sent out
  • B

    Provide adequate supply of hot water for the fixtures at bathtub and washbasin in the bathroom located at apt d1, 4th story, 1st apartment from south at west

    Oct 20, 2026 · Apt D1

    Open — Nov sent out
  • C

    M/d law abate the nuisance consisting of scalding hot water above 130 degrees in the entire apartment located at apt b3, 2nd story, 1st apartment from north at east

    Oct 15, 2026 · Apt B3

    Open — Nov sent out
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt b3, 2nd story, 1st apartment from north at east

    Oct 15, 2026 · Apt B3

    Open — Notice of issuance sent to tenant
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt b3, 2nd story, 1st apartment from north at east

    Oct 15, 2026 · Apt B3

    Open — Notice of issuance sent to tenant
  • A

    Paint with light colored paint to the satisfaction of this department all peeling paint surfaces in the private hallway , the foyer located at apt d1, 4th story, 1st apartment from south at west

    Jul 26, 2026 · Apt D1

    Open — Nov sent out
Show 40 more ↓
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at north and south walls north wall, south wall in the foyer located at apt d1, 4th story, 1st apartment from south at west

    Jul 26, 2026 · Apt D1

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at north and south walls north wall, south wall in the private hallway located at apt d1, 4th story, 1st apartment from south at west

    Jul 26, 2026 · Apt D1

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the 1st room from east at south located at apt c4, 3rd story, 2nd apartment from north at east

    Jul 20, 2026 · Apt C4

    Open — Nov sent out
  • B

    Replace with new the missing light fixture at ceiling in the 2nd room from east located at apt c4, 3rd story, 2nd apartment from north at east

    Jul 20, 2026 · Apt C4

    Open — Nov sent out
  • C

    Properly repair and abate unsafe electric wiring condition consisting of exposed wire from the ceiling in the 2nd room from east located at apt c4, 3rd story, 2nd apartment from north at east

    Jul 20, 2026 · Apt C4

    Closed — Violation dismissed
  • C

    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 = 2; wg to replace = 0; wg to repair = 0; in the entire apartment located at apt d1, 4th story, 1st apartment from south at west

    Jul 20, 2026 · Apt D1

    Closed — Violation closed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Apr 30, 2026

    Closed — Violation dismissed
  • B

    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 located at apt d4, 4th story, 2nd apartment from east at south

    Apr 20, 2026 · Apt D4

    Closed — Violation closed
  • B

    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 located at apt d4, 4th story, 2nd apartment from east at south

    Apr 20, 2026 · Apt D4

    Closed — Violation closed
  • C

    Properly repair with similar material the broken or defective wood floor in the 4th room from north at east located at apt d4, 4th story, 2nd apartment from east at south

    Apr 20, 2026 · Apt D4

    Closed — Violation closed
  • C

    M/d law abate the nuisance consisting of key operated lock at door leading to fire escape in the 4th room from north at east located at apt d4, 4th story, 2nd apartment from east at south

    Apr 20, 2026 · Apt D4

    Closed — Violation closed
  • C

    Properly repair with similar material the broken or defective wood floor in the 3rd room from north located at apt d4, 4th story, 2nd apartment from east at south

    Apr 20, 2026 · Apt D4

    Closed — Violation closed
  • B

    And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes household items at 2nd story balcony at building front at fire escape

    Apr 5, 2026

    Closed — Violation closed
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt d1, 4th story, 1st apartment from west at north

    Dec 18, 2025 · Apt D1

    Closed — Violation dismissed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt d1, 4th story, 1st apartment from west at north

    Dec 18, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective ceramic tiles at floor in the bathroom located at apt d1, 4th story, 1st apartment from west at north

    Dec 18, 2025 · Apt D1

    Closed — Violation dismissed
  • A

    Paint with light colored paint to the satisfaction of this department all peeling paint surfaces in the 3rd room from east, the foyer located at apt d1, 4th story, 1st apartment from south at west

    Nov 29, 2025 · Apt D1

    Closed — Violation dismissed
  • C

    M/d law abate the nuisance consisting of hot water exceeding the maximum of 130 degrees in the kitchen located at apt d1, 4th story, 1st apartment from west at north

    Nov 27, 2025 · Apt D1

    Closed — Violation dismissed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt d1, 4th story, 1st apartment from west at north

    Nov 27, 2025 · Apt D1

    Open — Not complied with
  • B

    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 located at apt d1, 4th story, 1st apartment from west at north

    Nov 27, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    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 located at apt d1, 4th story, 1st apartment from west at north

    Nov 27, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    Properly repair or replace the broken or defective broken glass pane at entrance door frame at west wall at public hall, 1st story

    Nov 25, 2025

    Closed — Violation closed
  • B

    Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the broken marble and concrete debris at north wall at public hall, 1st story

    Nov 25, 2025

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective ceramic tile at south wall at public hall, 1st story

    Nov 25, 2025

    Closed — Violation closed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt d1, 4th story, 1st apartment from west at north

    Nov 25, 2025 · Apt D1

    Open — Not complied with
  • C

    M/d law abate the nuisance consisting of hot water exceeding the maximum allowable temperature of 130 deg at all hot water fixtures in the entire apartment located at apt d1, 4th story, 1st apartment from west at north

    Nov 25, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    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 located at apt d1, 4th story, 1st apartment from west at north

    Nov 25, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    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 located at apt d1, 4th story, 1st apartment from west at north

    Nov 25, 2025 · Apt D1

    Closed — Violation dismissed
  • A

    Paint with light colored paint to the satisfaction of this department at ceiling in the foyer located at apt d1, 4th story, 1st apartment from west at north

    Nov 25, 2025 · Apt D1

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at east wall in the bathroom located at apt c4, 3rd story, 2nd apartment from north at east

    Nov 5, 2024 · Apt C4

    Closed — Violation dismissed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective counter balance lower sash at fire escape window in the 1st room from east at north located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective wood counter top at sink base cabinet in the kitchen located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective wood bottom panel inside sink base cabinet in the kitchen located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation dismissed
  • B

    Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt a2, 1st story, 1st apartment from east at south

    Oct 13, 2024 · Apt A2

    Closed — Violation dismissed
  • B

    Repair or replace the smoke detector defective in the entire apartment located at apt a2, 1st story, 1st apartment from east at south

    Oct 13, 2024 · Apt A2

    Closed — Violation dismissed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation dismissed
  • B

    Repair or replace the smoke detector missing in the entire apartment located at apt c4, 3rd story, 2nd apartment from north at east

    Oct 13, 2024 · Apt C4

    Closed — Violation dismissed
  • A

    Properly repair with similar material the broken or defective caulking around bathtub in the bathroom located at apt d1, 4th story, 1st apartment from south at west

    Oct 13, 2024 · Apt D1

    Closed — Violation dismissed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt a2, 1st story, 1st apartment from east at south

    Oct 13, 2024 · Apt A2

    Closed — Violation dismissed

DOB building violations · 11

  • Low pressure boiler boiler required

    Violation issued-failure to file 2024 external low pressure inspection

    Nov 14, 2025

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2023 external low pressure inspection

    Sep 23, 2024

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2021 external low pressure inspection

    Jun 30, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2022 external low pressure inspection

    Apr 25, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2012 inspection report

    May 15, 2014

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2011 inspection report

    Mar 1, 2013

    Dob violation - active
  • Low pressure boiler boiler required

    Lblvio-low pressure boiler boiler required

    Dec 31, 2009

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 3, 2008

    Dob violation - active
  • Construction other optional

    C-construction other optional

    Dec 17, 2003

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Aug 29, 1995

    Dob violation - active
Show 1 more ↓
  • Construction other optional

    C-construction other optional

    Dec 7, 1990

    Dob violation - active

ECB violations · 13

  • Class - 3

    Failure to provide key for access to heating system/ boiler room as per hmc-27-2033

    Oct 17, 2023

    Resolve
  • Class - 2

    Fournd larrs endurance boiler in apartment d1. boiler is not registered., maintain boiler; register boiler

    Oct 17, 2023 · Penalty $625

    Active
  • Class - 2

    Failure to maintain building in a code-complaint manner. at time of inspection observed at 2nd fl level,w/i apt #b4,at bathroom,sagging & bowing of tile floor approx 2" with separation of toilet to floor,leavin

    Jul 16, 2010

    Resolve
  • Hazardous

    Work w/o a permit work noted boilers installed in a various apts w/o permits apts observed are a1-a2 bi apts a1,a2,b1 & d1 have exhust ventsprotruding there exterior walls boilers observed are inclosed in very

    Dec 15, 2005 · Penalty $800

    Active
  • Non-hazardous

    Failure to provide approved plans at premises at time of inspection permit#301443212 expires on 2/22/05 for alt type #3 work.at time of inspection workers did not have drugs on site work noted sheet rock partit

    Nov 17, 2004

    Resolve
  • Non-hazardous

    Work w/o a permit. work noted: removing plaster from ceiling & walls & replacing with dry wall over existing partitons throughout apt a3. location noted: n/e unit 1st fl. remedy: stop all work, obtain permit, o

    Oct 13, 2004

    Resolve
  • Hazardous

    Failure to maintain. noted defect: excessive const debris stacked in bags approx 10'x 10' x 8'. n/w room in front of apt compiled debris of plastere & cement causing an excessive load on fl area. noted location

    Oct 13, 2004

    Resolve
  • Hazardous

    Work w/o a permit. note- apt b-3 interior renovation in process (1) new floor joists kitchen and bathroom. (2) new 2x3 wood studs work being done to comply with previous violations issued- no permits issued and

    Dec 17, 2003 · Penalty $800

    Active
  • Hazardous

    Failure to maintain bldg defect noted apt b3 kitchen and bathroom and layer fl are also out of plumb approx 8' at various location remedy maitain bldg make site safe immediately

    Sep 23, 2003 · Penalty $10,000

    Active
  • Hazardous

    Failure to maintain building. defect noted: b3 apt: fl between kitch and foyer are sagging out of plumbing approx 6" bathroom missing wall. tube kitchen aundry pe of culuy. maintain building, make safe

    Aug 12, 2003 · Penalty $2,500

    Active
Show 3 more ↓
  • Non-hazardous

    Failure to maintain. floor beams at 1st floor rotted and loose at various locations. (seen from cellar) remedy: repair and/or replace floor beams.

    Dec 20, 1996 · Penalty $1,000

    Active
  • Non-hazardous

    Failure to maintain building. rotted loose and defective floor joistsat first floor to sagg. loose and missing fire rated cellar ceiling at various locations. remedy: make all necessary repairs.

    May 12, 1995

    Resolve
  • Hazardous

    Failure to maintain floor joists rotted looses, and/or defective, 1st tier of beams,(3-4) all opts bathrooms, and fire stop loose and/or missing various locations, cellar ceiling. remedy: make all necessary rep

    Jan 3, 1991 · Penalty $575

    Active

Complaints

  • Plumbing

    Water supply

    Oct 19, 2026 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Oct 19, 2026 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Oct 14, 2026 · Apt D1

    Open
  • Unsanitary condition

    Pests

    Oct 14, 2026 · Apt D1

    Open
  • Appliance

    Electric/gas range

    Oct 1, 2026 · Apt A4

    Close
  • Heat/hot water

    Entire building

    Sep 21, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Sep 18, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Apr 19, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Apr 4, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 22, 2026 · Apt BLDG

    Close
Show 40 more ↓
  • Heat/hot water

    Apartment only

    Dec 15, 2025 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Nov 26, 2025 · Apt D1

    Close
  • Heat/hot water

    Entire building

    Nov 13, 2025 · Apt C2

    Close
  • Plumbing

    Water supply

    Nov 13, 2025 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Jan 11, 2025 · Apt D1

    Close
  • Heat/hot water

    Entire building

    Jan 6, 2025 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Dec 21, 2024 · Apt BLDG

    Close
  • Appliance

    Refrigerator

    Oct 18, 2024 · Apt D1

    Close
  • Plumbing

    Bathtub/shower

    May 7, 2024 · Apt D1

    Close
  • Safety

    Window guard broken/missing

    Apr 19, 2024 · Apt D1

    Close
  • Paint/plaster

    Ceiling

    Mar 20, 2024 · Apt A4

    Close
  • Heat/hot water

    Apartment only

    Jan 31, 2024 · Apt B1

    Close
  • Heat/hot water

    Entire building

    Dec 14, 2023 · Apt BLDG

    Close
  • Heat/hot water

    Apartment only

    Dec 10, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Dec 2, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Nov 27, 2023 · Apt D1

    Close
  • Heat/hot water

    Entire building

    Nov 24, 2023 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Nov 21, 2023 · Apt BLDG

    Close
  • General

    Bell/buzzer/intercom

    Nov 21, 2023 · Apt 1

    Close
  • Paint/plaster

    Radiator

    Nov 20, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Nov 20, 2023 · Apt D1

    Close
  • Door/window

    Window frame

    Nov 20, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Oct 15, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Oct 11, 2023 · Apt D1

    Close
  • Unsanitary condition

    Pests

    Oct 11, 2023 · Apt D1

    Close
  • Heat/hot water

    Apartment only

    Nov 13, 2022 · Apt C2

    Close
  • Plumbing

    Water supply

    Jan 29, 2021 · Apt D1

    Close
  • Heat/hot water

    Entire building

    Jan 12, 2021 · Apt A1

    Close
  • Paint/plaster

    Ceiling

    Oct 19, 2020 · Apt C1

    Close
  • Paint/plaster

    Ceiling

    Oct 19, 2020 · Apt C1

    Close
  • Water leak

    Slow leak

    Jul 31, 2020 · Apt B4

    Close
  • Unsanitary condition

    Pests

    Jul 31, 2020 · Apt B4

    Close
  • Unsanitary condition

    Mold

    Jul 31, 2020 · Apt B4

    Close
  • Water leak

    Slow leak

    Apr 30, 2019 · Apt C4

    Close
  • General

    Cabinet

    Apr 30, 2019 · Apt C4

    Close
  • Water leak

    Heavy flow

    Apr 30, 2019 · Apt C4

    Close
  • Water leak

    Heavy flow

    Apr 26, 2019 · Apt C4

    Close
  • Water leak

    Heavy flow

    Apr 26, 2019 · Apt C4

    Close
  • Paint/plaster

    Wall

    Apr 8, 2019 · Apt C4

    Close
  • Water leak

    Slow leak

    Apr 8, 2019 · Apt C4

    Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type
Walk-up apartment building (C1)
Year built
1916
Floors
4
Residential units
16
Building area
14,240 ft²
Lot area
4,000 ft²
Zoning
R6
Community board
312
Council district
44
Block / lot
5604 / 6
Assessed value
$521,550
Landmark / historic district
No

HPD registration #309376, last renewed Jul 24, 2026.

Questions about 4307 12 Avenue

Who owns 4307 12 Avenue?

The owner of record in NYC Department of City Planning PLUTO data is Mazel 12 Av LLC.

Does 4307 12 Avenue have violations?

Yes. NYC HPD has recorded 317 housing violations at this property.

Is 4307 12 Avenue rent stabilized?

NYC Department of Finance tax bills listed 16 rent-stabilized units here in 2024 (about 100% of its 16 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.

When was 4307 12 Avenue built?

City records list 1916 as the year it was built.

How many apartments are in 4307 12 Avenue?

It has 16 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.