503 Union Avenue
Brooklyn, NY 11211BBL 3-02315-0021Map
Owner of record: 505 Union Ave LLC
503 Union Avenue is an elevator apartment building built in 1930 in Brooklyn, 11211. It has 23 residential units across 5 floors. The owner of record is 505 Union Ave LLC. HPD has recorded 4 housing violations here, most recently on December 20, 2025. 1 of the 4 most recent violations are still open. City tax records listed 7 rent-stabilized apartments here in 2024.
- HPD violations
- 4
- DOB violations
- 13
- ECB violations
- 25
- HPD complaints
- 2
What to know
No open immediately-hazardous violations among recent records.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
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.
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 · 4
- ANon-hazardous
§ 329, m/d law and dept. rules and regs. provide a completed certificate of inspection visits in a proper frame at or near mailboxes, bottom edge of frame between 48-62 inches above floor missing
Dec 20, 2025
Closed — Violation dismissed - ANon-hazardous
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.
Mar 2, 2022
Closed — Violation dismissed - ANon-hazardous
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 13, 2021
Closed — Violation dismissed - BHazardous
§ 9, 170, 171, 300, 301, 302 m.d.law-file plans and application and obtain a certificate of occupancy to legalize the conversion from a private dwelling to multiple dwelling use if lawfully feasible or restore to lawful occupancy
Sep 24, 2008
Open — Nov sent out
DOB building violations · 13
- Construction other optional
Ftm bldg in a code comppliant manner-obsvd @ exp1 several brick masonry cracks at ground floor and near main entrance. owner to immed retain nyspe to eval the enite bldg and prepar/file repair dwgs repair bldg under permit. start work by 02/14/26 complete/sign off by 03/14/2026
Jan 14, 2026
Dob violation - dismissed - Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
Jun 1, 2022
Dob violation - dismissed - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 23, 2021
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 23, 2021
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 11, 2020
Dob violation - resolved - Failure to benchmark none
Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4
May 2, 2019
Dob violation - dismissed - Construction other optional
Borough commissioner ordered all work stopped for job # 321254165 due to revocation of filing privileges of applicant on record
Mar 14, 2018
Dob violation - dismissed - Construction other optional
Borough commissioner ordered all work stopped for job # 320283386 due to revocation of filing privileges of applicant on record
Mar 14, 2018
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Nov 15, 2017
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Nov 15, 2017
Dob violation - dismissed
Show 3 more ↓
- Electric signs none
Es-electric signs none
Sep 27, 1994
Dob violation - dismissed - Electric signs none
Es-electric signs none
Nov 25, 1988
Dob violation - dismissed - Electric signs none
Es-electric signs none
Nov 25, 1988
Dob violation - dismissed
ECB violations · 25
- Class - 2
Failure to maintain adequate housekeeping per section requirements work in progress under permit #320283386 and approved drawings.observed on altered 5 floors building on roof of second floor/mezzanine floor
Aug 22, 2018
Resolve - Class - 1
Handrails. handrails were missing @ stair near exp.4 missing handrailson a stairs creates a hazard. remedy: provide & maintain handrails on all stairs.
Oct 19, 2017 · Penalty $400
Resolve - Class - 1
Guardrails. @ time of insp. observed that guardrails cable system in use was inadequate, consisting of cables with more than 2' of stack & missing toe boars @ various locations throughout site. stop all work 10
Oct 19, 2017 · Penalty $1,200
Resolve - Class - 1
Const. super presence @ site @ time of insp. i requested to see the const. super for const. ops @ site none was provided & there was no evidence provided to show presence @ site (loges). remedy: provide & maint
Oct 19, 2017 · Penalty $1,600
Resolve - Class - 2
Plans. @ time of insp. i requested to see approved plans, none were given & none were available @ time of insp. i requested from the street workers to see plans, pe drawings, none were given for steel installat
Oct 19, 2017
Resolve - Class - 2
Bc3301.2.. no control access zone. @ time of insp. observed that therewere open areas with no caz in place to protect workers from falling debris, from const aps from above @ exp.1 grade level. remedy: provide
Oct 19, 2017
Resolve - Class - 2
Bc3301.2. base plates. supported pipe scaffold on site @ various locations was missing base plates/mudsills. stop all use of scaffold exceptto. remedy: provide & maintain base plates on scaffold or remove scaff
Oct 19, 2017
Resolve - Class - 1
No design drawing. at time of inspection,observed workers,cutting,tourching,copering steel beams upon request for pe design drawing for steel fabrication on site none were given. stop all steel fabrication on
Oct 19, 2017 · Penalty $250
Resolve - Class - 1
Const. super fail to perform duties. the following hazardous conditions were observed & swo & vio were issued on this date. no plans on site, no logs, no ohp, no roof protection , houskeeping, no signs, no toe
Oct 19, 2017 · Penalty $1,600
Resolve - Class - 1
Bc3309.10. protection of roof. @ time of insp. of 5 story bldg @ 4 fl level const. work in progress. i observed that there were no roof protection @ ecp. 2 adjacent property. failure to provide roof protection
Oct 19, 2017 · Penalty $400
Resolve
Show 15 more ↓
- Class - 1
Houskeeping. @ time of insp. observed that houskeeping was inadequate,consisting of material, debris, extension cords laying on fls & stairscreating a trip & fall hazard. stop work on stairs & fls 2,3,4 also st
Oct 19, 2017 · Penalty $400
Resolve - Class - 1
Material storage. at time of inpection observed loose material being stored w/i 10 feet of the leading edge at exp#1 at 3&4 sty's. consisting of cmu,pallets,planks,loose bolts & nuts. this condition cracks a
Oct 19, 2017 · Penalty $400
Resolve - Class - 1
Bc3309.1. over head protection. @ time of insp. observed that there was no ohp in place @ exp. 2 & 3 to protect adj property, steel beams erected 15' above adj property. this condition creates a hazard for pers
Oct 19, 2017 · Penalty $400
Resolve - Class - 1
Supervision or use of power operated hoisting equipment w/o a hoistingmachine license. above repodent used crane serial #9124-0038 to erect steel at active jobsite above or work being performed(crane)in steel,
Aug 14, 2017 · Penalty $1,600
Resolve - Class - 1
Operation of an articulating boom crane w/o a c of o at time observed equipment boom sn#91240035 (nas)being used outside of exemption of bc3319.3(10)in that the boom crane was not being used exclusively for loa
Aug 14, 2017
Resolve - Class - 1
Operation of an articulating boom crane w/o a c of o at the time observed. equipment boom crane serial #9124-0038 was being used outside of exemption of bc 3319.3(10)in that crane was not being used excussively
Aug 14, 2017 · Penalty $2,400
Resolve - Class - 1
Supervision or use of power operated hoisting equipment w/o a hoisting machine. above respondent contracted crane serial #9124-0037 to erect steel at active jobsite. work being performed(crane)in steel erection
Aug 14, 2017 · Penalty $1,600
Resolve - Class - 1
Failure to safeguard all persons & property affected by construction operations. respondent above set crane outriggers up on sidewalk w/no permits. obstruction of pedestrians was visible,forcing pedestrians to
Aug 14, 2017 · Penalty $10,000
Resolve - Class - 2
Operation of crane w/o certificate of approval. c of o no cd. user/steel erector above used crane sn#9124-0038 to erect steel(outside of exemption)crane performing such work shall obtain certificate of approval
Aug 14, 2017 · Penalty $800
Resolve - Class - 1
Supervision or use of power operated hoisting equipment w/o a hoisting machine license above respondent used crane serial #9124-0038 to erect steel at above location. crane work required a nyc license to operat
Aug 14, 2017
Resolve - Class - 1
Operation of an artculating boom crane w/o a c of o at the time observed. equipment boom crabe serial #9124-0038 was being used outside of exemption of bc3319.3(10)in that crane was not being used exclusively
Aug 14, 2017
Resolve - Class - 2
Operation of crane w/o certificate of approval. c of o no cd. general contracotr above used/contracted crane sn#9124-0038 to erect steel(outside of exeption). crane performing such work shall obtain certificate
Aug 14, 2017
Resolve - Class - 2
Failure to comply w/certificate of onsite inspection user/steel erector above used crane serial #9124-00.8 to erect steel w/o a certificate of onsite inspection(cn)a steel erection w/a crane shall be permitted
Aug 14, 2017 · Penalty $2,400
Resolve - Class - 2
Failure to comply w/certificate of onsite inspection gc above used/contracted crane serial #9124-0037 to erect steel w/o a certificate of onsite inspection(cn)steel erection w/a crane shall be permitted by cran
Aug 14, 2017 · Penalty $2,400
Resolve - Non-hazardous
Failure to maintain exterior building wall/ defects are/ st south garage door/ left side brick piev/ 1/2" diagonal crack thru brick evident.remedy: obtain permit, make all repairs.
May 29, 1998 · Penalty $180
Resolve
Complaints
- Unsanitary condition
Garbage/recycling storage
Jun 24, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Dec 17, 2025 · Apt BLDG
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Elevator apartment building (D5)
- Year built
- 1930
- Floors
- 5
- Residential units
- 23
- Building area
- 36,888 ft²
- Lot area
- 10,387 ft²
- Zoning
- M1-2/R6
- Community board
- 301
- Council district
- 33
- Block / lot
- 2315 / 21
- Assessed value
- $3,271,500
- Landmark / historic district
- No
HPD registration #389208, last renewed Aug 22, 2025.
Questions about 503 Union Avenue
Who owns 503 Union Avenue?
The owner of record in NYC Department of City Planning PLUTO data is 505 Union Ave LLC.
Does 503 Union Avenue have violations?
Yes. NYC HPD has recorded 4 housing violations at this property.
Is 503 Union Avenue rent stabilized?
NYC Department of Finance tax bills listed 7 rent-stabilized units here in 2024 (about 30% of its 23 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 503 Union Avenue built?
City records list 1930 as the year it was built.
How many apartments are in 503 Union Avenue?
It has 23 residential units and 24 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.