421 Union Avenue
Brooklyn, NY 11211BBL 3-02372-0005Map
Owner of record: 421 Union Avenue LLC
421 Union Avenue is an elevator apartment building built in 2008 in Brooklyn, 11211. It has 29 residential units across 6 floors. The owner of record is 421 Union Avenue LLC. HPD has recorded 1 housing violation here, most recently on May 8, 2026. City tax records listed 29 rent-stabilized apartments here in 2024.
- HPD violations
- 1
- DOB violations
- 19
- ECB violations
- 10
- HPD complaints
- 6
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 · 1
- 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.
May 8, 2026
Closed — Violation dismissed
DOB building violations · 19
- Low pressure boiler boiler required
Violation issued-failure to file 2018 external low pressure inspection
Jun 20, 2023
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued-failure to file 2018 external low pressure inspection
Jun 20, 2023
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued-failure to file 2022 external low pressure inspection
Apr 25, 2023
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued-failure to file 2022 external low pressure inspection
Apr 25, 2023
Dob violation - dismissed - Failure to post energy grade/score none
Failure to display energy efficiency score and energy efficiency grade as per adcode sec. 28-309.12.3
Sep 30, 2022
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Dec 22, 2021
Dob violation - dismissed - Elevator elevatorrequired
E-elevator elevatorrequired
Mar 12, 2021
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 28, 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 3, 2019
Dob violation - dismissed - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 13, 2019
Dob violation - resolved
Show 9 more ↓
- Elevator elevatorrequired
E-elevator elevatorrequired
Feb 22, 2018
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Aug 28, 2017
Dob violation - resolved - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Oct 5, 2016
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Sep 7, 2016
Dob violation - dismissed - Elevator elevatorrequired
E-elevator elevatorrequired
Feb 25, 2016
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Jan 20, 2015
Dob violation - resolved - Elevator elevatorrequired
E-elevator elevatorrequired
Jan 15, 2013
Dob violation - resolved - Construction other optional
Failure to adequately support adjoining ground or structure affected by excavation noted:job# 302094338nb underpinning of adjoining bldg le ft exposed hole approx 3'x3'x5'd leaving cavity with water exposed remedy:stop all work except to make safe,contact dob @(718/802/3685) prior to returning to work
Jul 12, 2007
Dob violation - dismissed - Construction other optional
C-construction other optional
Jun 25, 1998
Vw*-violation - work w/o permit dismissed
ECB violations · 10
- Class - 2
Shorten hoist ropes. replace worn gibs where needed. secure gibs where needed. provide gibs where missing. defective car phone; low audit. inoperative overhead lighting. expired maint log. missing fire extingui
Mar 22, 2022 · Penalty $1,562
Resolve - Class - 1
Occupancy contrary to that allowed by the certificate of occupancy or bldgs dept records.noted:at time of inspection observed at 6 fl level of premises a fully complete recreating room w/certificate #302094338f
Sep 24, 2021 · Penalty $1,250
Resolve - Class - 2
Permanent dwelling offered/converted/used to other than permanent residential purposes. c of o# 302094338f indicates premises legally approved multi dwelling class a now premises converted/offered for short
Jun 6, 2017 · Penalty $1,600
Resolve - Class - 1
97x10. (97x)failure to maintain bldg in code compliant manner; service equipment elevator as per bc3001.2 & 27.987. dobs records show the only elevator in bldg as active. upon insp, the device is found to be ou
Jul 13, 2016 · Penalty $1,000
Resolve - Class - 1
97x10. failure to maintain bldg in code compliant manner; service equipment elevator as per bc 3001.2 & 27-987. dob records show the only elevator in bldg as active. upon insp the device is found to be out of s
Jun 16, 2016 · Penalty $1,000
Resolve - Class - 2
Failure to provide approved/accepted plans at the jobsite. there were no approved plans for steel erection at the jobsite at the time of inspection full stop work order issued pursuant to section 28-207.2 of
Jan 21, 2015 · Penalty $250
Resolve - Class - 2
Sec. 1704.1.1 failure to file a special inspection statement of respondibility prior to permit issuance & prior to the start of work under special inspection requirement. observed structural steel erection at
Jan 21, 2015
Resolve - Non-hazardous
Failure to provide approved plans or shop drawings on site during underpinning,sheeting,shoring,bracing,sheet piling operation. noted: job#302094338 n.b. excavation and underpinning activities w/ no plans on si
Jul 12, 2007
Resolve - Hazardous
Failure to provide 3ft 6in guard rail on solid enclosure around open and accessible sides of excavation. noted: job # 302094338 nb excavatedsite approx. 30' x 30' x 30' x 30' (square) by approx. 7' deep. has no
Jul 12, 2007 · Penalty $5,000
Resolve - Non-hazardous
Work without a permit. work noted: having dug excavation to remove/repair gas tanks at premises without obtaining a permit. "stop all work" remedy: obtain permit for work to remove tanks.
Jun 25, 1998
Resolve
Complaints
- Heat/hot water
Apartment only
Feb 7, 2026 · Apt 8B
Close - Plumbing
Water supply
Oct 30, 2022 · Apt 3E
Close - Heat/hot water
Entire building
Jun 19, 2017 · Apt 2C
Close - Door/window
Door
Jul 23, 2016 · Apt BLDG
Close - Door/window
Door
Jul 23, 2016 · Apt FRONT
Close - General
Bell/buzzer/intercom
Dec 18, 2015 · Apt 1A
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Elevator apartment building (D1)
- Year built
- 2008
- Floors
- 6
- Residential units
- 29
- Building area
- 33,848 ft²
- Lot area
- 10,184 ft²
- Zoning
- M1-2/R6A
- Community board
- 301
- Council district
- 34
- Block / lot
- 2372 / 5
- Assessed value
- $3,653,550
- Landmark / historic district
- No
HPD registration #384092, last renewed Oct 8, 2025.
Questions about 421 Union Avenue
Who owns 421 Union Avenue?
The owner of record in NYC Department of City Planning PLUTO data is 421 Union Avenue LLC.
Does 421 Union Avenue have violations?
Yes. NYC HPD has recorded 1 housing violations at this property.
Is 421 Union Avenue rent stabilized?
NYC Department of Finance tax bills listed 29 rent-stabilized units here in 2024 (about 100% of its 29 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 421 Union Avenue built?
City records list 2008 as the year it was built.
How many apartments are in 421 Union Avenue?
It has 29 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.