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503 12 Street

Brooklyn, NY 11215BBL 3-01097-0056Map

Owner of record: 503-9 12 St LLC

503 12 Street is a walk-up apartment building built in 1916 in Brooklyn, 11215. It has 34 residential units across 4 floors. The owner of record is 503-9 12 St LLC. HPD has recorded 285 housing violations here, most recently on October 8, 2026. 23 of the 50 most recent violations are still open. City tax records listed 12 rent-stabilized apartments here in 2024.

HPD violations
285
DOB violations
5
ECB violations
21
HPD complaints
258

What to know

Concern
13 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Oct 8, 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
12
About 35% of the building's 34 apartments
Down from 13 in 2018

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 · 285

  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt 4b, 4th story, 2nd apartment from west at north

    Oct 8, 2026 · Apt 4B

    Open — Notice of issuance sent to tenant
  • C

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

    Oct 8, 2026 · Apt 1A

    Open — Notice of issuance sent to tenant
  • C

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

    Oct 8, 2026 · Apt 1A

    Open — Notice of issuance sent to tenant
  • B

    Properly repair with similar material the broken or defective marble saddle at entry in the bathroom located at apt 1a, 1st story, 2nd apartment from north at east

    Oct 8, 2026 · Apt 1A

    Open — Nov sent out
  • C

    Provide hot water at all hot water fixtures in the entire apartment located at apt 1a, 1st story, 2nd apartment from north at east

    Oct 8, 2026 · Apt 1A

    Open — Civ14 mailed
  • C

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

    Oct 8, 2026

    Open — Nov certified on time
  • B

    Properly repair or replace the broken or defective wood door panel that is broken in the 1st room from north located at apt 1a, 1st story, 2nd apartment from north at east

    Oct 8, 2026 · Apt 1A

    Open — Civ14 mailed
  • C

    Provide hot water at all hot water fixtures in the entire apartment located at apt 4b, 4th story, 2nd apartment from west at north

    Oct 8, 2026 · Apt 4B

    Open — Civ14 mailed
  • C

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

    Oct 8, 2026

    Open — Nov certified on time
  • C

    Provide hot water at all hot water fixtures in the entire apartment located at apt 1b, 1st story, 2nd apartment from west at north

    Oct 7, 2026 · Apt 1B

    Open — Civ14 mailed
Show 40 more ↓
  • C

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

    Oct 7, 2026

    Open — Nov certified on time
  • C

    Abate the nuisance consisting of evidence of rats and all underlying causes creating the pest infestations, by using integrated pest management (ipm), eliminate all burrow entry and passageways, pest nests, holes, gaps or cracks in walls, ceilings, floors, fixing leaks and managing garbage in public areas. evidence found at at rear yard

    Oct 5, 2026

    Open — Nov sent out
  • B

    Remove all encumbrances consisting of bicycles and scooters at public hall, 3rd story

    Oct 5, 2026

    Open — Nov sent out
  • A

    Paint with light colored paint to the satisfaction of this department ceiling at 1st public hall bulkhead from north

    Oct 5, 2026

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective fire retardant material at ceiling at 1st public hall bulkhead from north

    Oct 5, 2026

    Open — Nov sent out
  • A

    Paint with light colored paint to the satisfaction of this department ceiling at public hall, 4th story

    Oct 5, 2026

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective fire retardant ceiling at public hall, 4th story

    Oct 5, 2026

    Open — Nov sent out
  • B

    And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes consisting of flower pots at front of building at fire escape, 4th story

    Oct 5, 2026

    Open — Nov sent out
  • C

    Properly repair with similar material the broken or defective non-fire proof 5th tread from bottom at public hall stairs, 1st story

    Oct 5, 2026

    Open — Nov sent out
  • A

    Post a proper notice regarding rent stabilization law, in a form approved by the commissioner, in a conspicuous location within the common area at the buildings entrance. for more information about signage requirements, please visit: https://www.nyc.gov/site/hpd/services-and-information/required-signage.page

    Oct 5, 2026

    Open — Nov certified on time
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt c2, 2nd story, 1st apartment from west at north

    Jun 23, 2026 · Apt C2

    Open — Defect letter issued
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt c2, 2nd story, 1st apartment from west at north

    Jun 23, 2026 · Apt C2

    Open — Defect letter issued
  • B

    Properly repair with similar material the broken or defective marble tread 5th from bottom at public hall stairs, 1st story

    Feb 22, 2026

    Closed — Violation dismissed
  • C

    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 wrong information at public hall, 1st story

    Feb 22, 2026

    Closed — Violation dismissed
  • C

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

    Feb 22, 2026

    Closed — Violation dismissed
  • C

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

    Feb 22, 2026 · Apt 1A

    Closed — Violation dismissed
  • C

    Provide hot water at all hot water fixtures in the entire apartment located at apt 1a, 1st story, 1st apartment from east at south

    Feb 22, 2026 · Apt 1A

    Closed — Violation dismissed
  • C

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

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at north wall in the 1st room from north at east located at apt 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • B

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

    Oct 21, 2025 · Apt 4C

    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 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    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 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • B

    Properly repair the source and abate the evidence of a water leak at north wall in the 1st room from north at east located at apt 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the kitchen located at apt 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • B

    Repair the roof so that it will not leak over ceiling in the kitchen located at apt 4c, 4th story, 1st apartment from west at north

    Oct 21, 2025 · Apt 4C

    Closed — Violation dismissed
  • C

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

    Oct 19, 2025

    Closed — Violation closed
  • C

    Provide hot water at all hot water fixtures in the entire apartment located at apt 2c, 2nd story, 1st apartment from west at north

    Oct 19, 2025 · Apt 2C

    Closed — Violation dismissed
  • B

    Refit door in the entrance located at apt 2d, 2nd story, 2nd apartment from east at south

    Jun 30, 2025 · Apt 2D

    Closed — Violation dismissed
  • B

    Trace and repair the source and abate the visible mold condition... less then 10 sqft at east window frame in the bathroom located at apt 3b, 3rd story, 2nd apartment from west at north original violation 18061475 issued 25-jun-25 has been upgraded to class b per administrative code 27-2017.3a(3)(a) or (b).

    Jun 25, 2025 · Apt 3B

    Open — First no access to re- inspect violation
  • A

    Trace and repair the source and abate the visible mold condition... less then 10 sqft at east window frame in the bathroom located at apt 3b, 3rd story, 2nd apartment from west at north

    Jun 25, 2025 · Apt 3B

    Closed — Violation closed
  • C

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

    May 16, 2025 · Apt 1A

    Closed — Violation closed
  • C

    Properly repair the source and abate the evidence of a water leak at the ceiling in the 5th room from north located at apt 1a, 1st story, 1st apartment from north at east

    May 16, 2025 · Apt 1A

    Closed — Violation closed
  • C

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the 5th room from north located at apt 1a, 1st story, 1st apartment from north at east

    May 16, 2025 · Apt 1A

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective spring balance lower window sash at 1st window from east at south in the 5th room from north located at apt 1a, 1st story, 1st apartment from north at east

    May 16, 2025 · Apt 1A

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 1a, 1st story, 1st apartment from north at east

    May 16, 2025 · Apt 1A

    Closed — Violation dismissed
  • B

    Properly repair or replace the broken or defective doorbell at door to apartment entrance in the entrance located at apt 1a, 1st story, 1st apartment from north at east

    May 16, 2025 · Apt 1A

    Closed — Violation closed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 1a, 1st story, 1st apartment from north at east

    May 14, 2025 · Apt 1A

    Closed — Violation dismissed
  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 1a, 1st story, 1st apartment from north at east

    May 14, 2025 · Apt 1A

    Closed — Violation dismissed
  • C

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

    May 14, 2025 · Apt 1A

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective vinyl floor tiles in the foyer located at apt 3b, 3rd story, 1st apartment from west at north

    May 14, 2025 · Apt 3B

    Closed — Violation dismissed

DOB building violations · 5

  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - dismissed
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Aug 18, 2021

    Dob violation - dismissed
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Aug 18, 2021

    Dob violation - dismissed
  • Construction other optional

    Haz

    Jan 3, 2001

    Dob violation - active
  • Construction other optional

    C-construction other optional

    Dec 26, 2000

    Dob violation - active

ECB violations · 21

  • Class - 2

    Atoi, observed at expo 2 interior courtyard, exit from building leads to a locked door-knob operated metal door for egress to the street. respondent has failed to maintain building in a code compliant manner. e

    Feb 21, 2025 · Penalty $1,250

    Resolve
  • Class - 2

    Failure to maintain building in code-compliant manner. atoi, observed deterioration of stair threads in building stairwell. observed condition in multiple locations, at 4th to roof landing 7th thread deteriorat

    Sep 30, 2024 · Penalty $310

    Resolve
  • Class - 3

    Burner motor cover is loose+vibrating/body drain pipes missing at safety valves/oil shut off valve missing top of tank/vent limiter missing in gas piolit regulator/storage at gas meters/first zone circulator co

    Feb 6, 2023 · Penalty $250

    Resolve
  • Class - 1

    28-201.1 inadequate tenant protection plan.at time of inspection observed work being performed under the aforementioned job 3. the submitted tpp lacks specific means and methods on egress.egress was not clarifi

    May 26, 2021 · Penalty $2,500

    Resolve
  • Class - 1

    Bc3301.10-failure to comply with tenant protection plan at the time of my inspection observed work being performed under the aforementioned job# tpp under health requirements states to have vacuum ,wet towel.

    May 26, 2021 · Penalty $2,530

    Resolve
  • Class - 2

    Sidewalk shed does not meet building code-specifications. noted: sidewalk shed over entrance door not tight against building approx 2'high x10'wide soace over main entrance door. due to history of non-complianc

    Sep 15, 2009 · Penalty $2,400

    Resolve
  • Class - 3

    Sec. 3301.9.1. failure to provide required information on contractor'ssign. noted: there are sidewalk shed in place and missing: 1) permit #2) expiration date. remedy: comply w/code requirements.

    Apr 24, 2009 · Penalty $500

    Resolve
  • Class - 2

    Sidewalk shed doesn't conform to bldg code specification. noted: 1) bended header beam; 2)junior beam are not parallel. remedy: conform to dode. call for reinspection. 212-676-1076.

    Apr 24, 2009 · Penalty $2,400

    Resolve
  • Hazardous

    Failure to maintain defect is:fire stop ceiling is missing in various location at cellar.2.cracked,rotten beams at cellar.3.sagging in floor in apt 1a.4.ceiling is sagging and water damage in apt 1a.living room

    Mar 27, 2001 · Penalty $2,500

    Resolve
  • Hazardous

    Failure to maintain building hazardous noted:floor joist and beams(under apt 1-a)were (10 efectives /rotten causing vibration at apt #1a cracks are visible to corners of ceiling and floorings also walls.floor

    Jan 3, 2001 · Penalty $2,500

    Resolve
Show 11 more ↓
  • Hazardous

    Failure to maintain bldg hazadous cracked rotted beams in cellar ceiling sagging foors apt 1a cellar ceiling unsealed in many various area.also sagging ceiling in cellar floring in hall of apt 1a is separating

    Dec 26, 2000 · Penalty $2,500

    Resolve
  • Hazardous

    Failure to maintain defect is sagging fls and walls in apt 3d fls on kitchen hallway and bedrm are unlevel and and sagging showing evidence at door frames which are approx 1 out of permit in some areas support

    May 6, 1999 · Penalty $800

    Resolve
  • Non-hazardous

    Failure to maintain defect is: floor of apartment 1c is sinking at various locations of apartment. doors dont close and floor is pulling away from basement at various locations. remedy: make safe immeditely obt

    Dec 27, 1996

    Resolve
  • Non-hazardous

    Failure to maitnain bldg interior.defect is:sagged floor approx 3 inches deep at front of vesibule.remedy:make all necessary repairs.

    Apr 11, 1996

    Resolve
  • Non-hazardous

    Work without a permit:work noted:removal of floor approx 50-0 x 50-0 x 20inches deep at cellar rear exposing the footing of the bearing wallat center.remedy:make safe immediately remedy:stop all work obtain a p

    Apr 10, 1996 · Penalty $800

    Resolve
  • Non-hazardous

    Work without a permit work noted removal and replacement of partition walls bathrooms and kitchens from various apts on the 2,3 & 4 floor remedystop all work and obtain a permit if feasible or restore to prior

    Apr 8, 1993

    Resolve
  • Non-hazardous

    Work without a permit permit#300190870 expired 1/29/93 removal of partitions on 2nd floor apartment south west corner of the building remedy renew permit.

    Feb 4, 1993

    Resolve
  • Non-hazardous

    Work without a permit. work noted: renovatig entire fourth story northeast and south west apartments. partitions demolished throughout both apt.'s remedy: stop all work immediately obtain a permit if feasible o

    Oct 15, 1990 · Penalty $285

    Resolve
  • Non-hazardous

    Failure to maintain exterior building wall hazardous defect is wood and masonry structure above roof at southwest ocrner leaning east words out of plumb and appear in danger of collapsing on top of the roof

    Oct 9, 1990 · Penalty $720

    Resolve
  • Non-hazardous

    Failure to maintain exterior building wall defect is crack brick work over front west first sty window first sty front west window loose defective and leaning inwards out of plumb of crack defective brickwork

    Oct 9, 1990 · Penalty $285

    Resolve
  • Hazardous

    Failrueto maintain exterior building wall. dumbwaiter bulkhead at southwest corner of roof is defective and out of plumb and in danger of collapse.

    Oct 5, 1990

    Resolve

Complaints

  • Unsanitary condition

    Pests

    Oct 7, 2026 · Apt 3B

    Open
  • Heat/hot water

    Apartment only

    Oct 7, 2026 · Apt 3B

    Open
  • Plumbing

    Radiator

    Oct 7, 2026 · Apt 3B

    Open
  • Heat/hot water

    Apartment only

    Oct 7, 2026 · Apt 3B

    Open
  • Heat/hot water

    Entire building

    Oct 6, 2026 · Apt 4B

    Close
  • Heat/hot water

    Entire building

    Oct 6, 2026 · Apt 1A

    Open
  • General

    Janitor/super

    Oct 6, 2026 · Apt 1A

    Open
  • Unsanitary condition

    Pests

    Oct 6, 2026 · Apt 1A

    Close
  • Door/window

    Door

    Oct 6, 2026 · Apt 1A

    Close
  • Unsanitary condition

    Pests

    Oct 6, 2026 · Apt 1A

    Close
Show 40 more ↓
  • Plumbing

    Water supply

    Oct 6, 2026 · Apt 1A

    Close
  • General

    Mailbox

    Oct 6, 2026 · Apt 1A

    Close
  • Heat/hot water

    Entire building

    Oct 6, 2026 · Apt BLDG

    Close
  • Unsanitary condition

    Pests

    Sep 29, 2026 · Apt 2C

    Close
  • Unsanitary condition

    Pests

    Sep 29, 2026 · Apt 2C

    Close
  • Unsanitary condition

    Pests

    Sep 28, 2026 · Apt 4C

    Close
  • Unsanitary condition

    Pests

    Sep 28, 2026 · Apt 4C

    Close
  • Door/window

    Window frame

    Sep 28, 2026 · Apt 4C

    Close
  • Water leak

    Heavy flow

    Sep 28, 2026 · Apt 4C

    Close
  • Heat/hot water

    Entire building

    Feb 19, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Feb 19, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Feb 19, 2026 · Apt 1A

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt 1A

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt 3B

    Close
  • Heat/hot water

    Apartment only

    Jan 24, 2026 · Apt 4C

    Close
  • Heat/hot water

    Apartment only

    Jan 24, 2026 · Apt 3C

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt 3A

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt 1A

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt 2C

    Close
  • Heat/hot water

    Entire building

    Jan 24, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 19, 2026 · Apt 3B

    Close
  • Unsanitary condition

    Pests

    Jan 8, 2026 · Apt 4C

    Close
  • Heat/hot water

    Entire building

    Jan 7, 2026 · Apt BLDG

    Close
  • Heat/hot water

    Entire building

    Jan 7, 2026 · Apt 1A

    Close
  • Unsanitary condition

    Pests

    Nov 20, 2025 · Apt C2

    Close
  • Heat/hot water

    Apartment only

    Oct 29, 2025 · Apt 2C

    Close
  • Heat/hot water

    Entire building

    Oct 16, 2025 · Apt 2C

    Close
  • Unsanitary condition

    Pests

    Oct 14, 2025 · Apt 4C

    Close
  • Plumbing

    Basin/sink

    Oct 14, 2025 · Apt 4C

    Close
  • Water leak

    Damp spot

    Oct 14, 2025 · Apt 4C

    Close
  • Unsanitary condition

    Pests

    Sep 5, 2025 · Apt 2D

    Close
  • Unsanitary condition

    Pests

    Jul 1, 2025 · Apt 2D

    Close
  • Unsanitary condition

    Pests

    May 22, 2025 · Apt 2D

    Close
  • Unsanitary condition

    Pests

    May 13, 2025 · Apt 1A

    Close
  • General

    Bell/buzzer/intercom

    May 13, 2025 · Apt 1A

    Close
  • Unsanitary condition

    Pests

    May 13, 2025 · Apt 1A

    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
34
Building area
30,047 ft²
Lot area
10,000 ft²
Zoning
R6B
Community board
306
Council district
39
Block / lot
1097 / 56
Assessed value
$3,211,200
Landmark / historic district
Park Slope Historic District

HPD registration #334380, last renewed Jun 24, 2026.

Questions about 503 12 Street

Who owns 503 12 Street?

The owner of record in NYC Department of City Planning PLUTO data is 503-9 12 St LLC.

Does 503 12 Street have violations?

Yes. NYC HPD has recorded 285 housing violations at this property.

Is 503 12 Street rent stabilized?

NYC Department of Finance tax bills listed 12 rent-stabilized units here in 2024 (about 35% of its 34 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.

When was 503 12 Street built?

City records list 1916 as the year it was built.

How many apartments are in 503 12 Street?

It has 34 residential units.

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