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555 Union Street

Brooklyn, NY 11215BBL 3-00433-0057Map

Owner of record: Union Residence LLC

555 Union Street is a walk-up apartment building built in 1920 in Brooklyn, 11215. It has 4 residential units across 3 floors. The owner of record is Union Residence LLC. HPD has recorded 61 housing violations here, most recently on September 15, 2026. 10 of the 50 most recent violations are still open.

HPD violations
61
DOB violations
13
ECB violations
23
HPD complaints
93

What to know

Concern
3 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Sep 15, 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

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 61

  • B

    Remove all obstructions and repair all defects in at water closet in the 1st bathroom from north at east located at apt 3, 3rd story, 1st apartment from west at north

    Sep 15, 2026 · Apt 3

    Open — Civ14 mailed
  • C

    Properly repair with similar material the broken or defective wood floor in the 1st room from east at south located at apt 3, 3rd story, 1st apartment from west at north

    Sep 15, 2026 · Apt 3

    Open — Nov sent out
  • B

    Repair the roof so that it will not leak at ceiling in the 3rd room from north located at apt 3, 3rd story, 1st apartment from south at west

    Sep 8, 2026 · Apt 3

    Open — Civ14 mailed
  • A

    Paint with light colored paint to the satisfaction of this department the ceiling in the 3rd room from north located at apt 3, 3rd story, 1st apartment from south at west

    Sep 8, 2026 · Apt 3

    Open — Civ14 mailed
  • C

    Properly repair with similar material the broken or defective wood floor in the 3rd room from north located at apt 3, 3rd story, 1st apartment from south at west

    Sep 8, 2026 · Apt 3

    Open — Civ14 mailed
  • 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 evidance of fresh rat dropping throughout yard

    Aug 14, 2026

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective wood floor in the 1st room from east located at apt 3, 3rd story, 1st apartment from south at west

    Jun 28, 2026 · Apt 3

    Closed — Violation dismissed
  • B

    Repair the roof so that it will not leak at ceiling in the 1st room from east located at apt 3, 3rd story, 1st apartment from south at west

    Jun 28, 2026 · Apt 3

    Closed — Violation dismissed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color ceiling and east wall in the 1st room from north located at bsmt-apt 1b, 1st bsmt-apt from west at north

    Jun 28, 2026 · Apt 1B

    Closed — Violation closed
  • A

    Trace and repair the source and abate the visible mold condition... less than 10 sq ft 4 sq ft at east wall in the 1st room from north located at bsmt-apt 1b, 1st bsmt-apt from west at north

    Jun 28, 2026 · Apt 1B

    Closed — Violation closed
Show 40 more ↓
  • B

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

    Jun 28, 2026 · Apt 3

    Closed — Violation dismissed
  • 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.

    Jun 11, 2025

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective wood floor sloping in the 1st room from north at west located at bsmt-apt baseme, bsmt-apt at north

    Aug 14, 2019 · Apt BASEME

    Closed — Violation closed
  • C

    Properly repair with similar material the broken or defective wood floor in the foyer located at bsmt-apt b, bsmt-apt at north

    Aug 14, 2019 · Apt B

    Closed — Violation closed
  • A

    Trace and repair the source and abate the visible mold condition... at base board at north wall approx. 3 sq.ft in the 1st room from north at west located at bsmt-apt b, bsmt-apt at north

    Aug 14, 2019 · Apt B

    Closed — Violation dismissed
  • B

    Trace and repair the source and abate the visible mold condition... around base board molding at east wall approx. 10 sq.ft in the foyer located at bsmt-apt baseme, bsmt-apt at north

    Aug 14, 2019 · Apt BASEME

    Closed — Violation dismissed
  • A

    Properly repair with similar material the broken or defective wood floor sloping in the 2nd room from north located at bsmt-apt baseme, bsmt-apt at north

    Aug 14, 2019 · Apt BASEME

    Closed — Violation dismissed
  • A

    Properly repair with similar material the broken or defective wood floor sloping in the kitchen located at bsmt-apt baseme, bsmt-apt at north

    Aug 14, 2019 · Apt BASEME

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 15, 2016

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 14, 2015

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Feb 25, 2015

    Closed — Violation dismissed
  • I

    Above premises have been vacant and untenanted except for caretaker for 60 days or more, and cannot be reoccupied until a new certificate of occupancy has been obtained. premises have been vacant since september 27, 2013

    Sep 27, 2013

    Open — Defect letter issued
  • I

    Above premises have been vacant and untenanted except for caretaker for 60 days or more, and cannot be reoccupied until a new certificate of occupancy has been obtained. premises have been vacant since 05/25/2012

    May 25, 2012

    Open — Defect letter issued
  • I

    Above premises have been vacant and untenanted except for caretaker for 60 days or more, and cannot be reoccupied until a new certificate of occupancy has been obtained. premises have been vacant since date unknown

    Feb 20, 2009

    Open — Defect letter issued
  • B

    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 minimum required

    Nov 1, 2006

    Closed — Violation dismissed
  • B

    Remove the accumulation of refuse and/or rubbish and maintain in a clean condition the .. at front areaway

    May 11, 2006

    Closed — Violation closed
  • C

    Make safe by properly repairing the structural defect rotten wood joist at ceiling, center public hall basement sty. at basement

    Feb 10, 2006

    Open — Not complied with
  • C

    Properly repair the broken or defective counterbalances on both windows in the kitchen located at apt 3, 3rd story

    Feb 10, 2006 · Apt 3

    Closed — Violation dismissed
  • C

    Replace with new the broken or defective glass at window to fireescape in the 2nd room from north at west located at apt 3, 3rd story, 1st apartment from south at west

    Feb 10, 2006 · Apt 3

    Closed — Violation closed
  • B

    Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. in the entire apartment located at apt 3, 3rd story, 1st apartment from south at west

    Dec 19, 2005 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective metal ceiling in the kitchen located at apt 3, 3rd story, 1st apartment from south at west

    Dec 19, 2005 · Apt 3

    Closed — Violation dismissed
  • B

    Repair the flushing apparatus and maintain same so as to flush effectively the water closet .. in the bathroom located at apt 3, 3rd story, 1st apartment from south at west

    Dec 19, 2005 · Apt 3

    Closed — Violation closed
  • A

    Refit windows in the entire apartment located at apt 3, 3rd story, 1st apartment from south at west

    Dec 19, 2005 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective sloping wood floor in the 1st room from north at east located at apt 3, 3rd story, 1st apartment from south at west

    Dec 19, 2005 · Apt 3

    Closed — Violation closed
  • B

    Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. in the entire apartment located at apt 3, 3rd story

    Nov 4, 2004 · Apt 3

    Closed — Violation closed
  • A

    Post a proper notice of carbon monoxide detecting device requirements, in a form approved by the commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in a private dwelling. at public hall, 1st story

    Nov 4, 2004

    Open — Not complied with
  • B

    Properly secure the loose balusters at public hall stairs, 2nd story

    Oct 2, 2004

    Closed — Violation closed
  • B

    Repair the broken or defective connection water supply line in the bathroom located at apt 3, 3rd story

    Oct 2, 2004 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective wood floor in the 1st room from east located at apt 3, 3rd story

    Oct 2, 2004 · Apt 3

    Closed — Violation closed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color walls in the 1st bedroom from east at south located at apt 3, 3rd story

    Oct 2, 2004 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective wood floor in the kitchen located at apt 3, 3rd story

    Oct 2, 2004 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective ceiling in the kitchen located at apt 3, 3rd story

    Oct 2, 2004 · Apt 3

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective metal ceiling in the kitchen located at apt 3, 3rd story, apartment at west

    Apr 23, 2004 · Apt 3

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective plaster board south wall in the bathroom located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation closed
  • B

    Properly secure the loose electrical outlet east wall in the 1st room from north at west located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation closed
  • B

    M/d law abate the nuisance consisting of broken and loose vinyl floor tile in the bathroom located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation dismissed
  • B

    Properly repair with similar material the broken or defective ceramic wall tile in the bathroom located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation closed
  • A

    Refit upper and lower north and south windows in the 1st room from north at west located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation closed
  • B

    Properly secure the loose electrical outlet west wall 2nd room from west and north wall in the private hallway located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation closed
  • B

    M/d law abate the nuisance consisting of loose and broken vinyl floor tile in the kitchen located at apt 1, 1st story, apartment at north

    Dec 9, 2002 · Apt 1

    Closed — Violation dismissed

DOB building violations · 13

  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Fail to certify class 1 none

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

    May 17, 2017

    Dob violation - dismissed
  • Construction other optional

    C-construction other optional

    Feb 22, 2017

    Vp*-violation unserved ecb- dismissed
  • Immediate emergency anythingoptional

    Imegncy-immediate emergency anythingoptional

    Jul 9, 2008

    Dob violation - active
Show 3 more ↓
  • Construction other optional

    C-construction other optional

    Feb 2, 2007

    Vw-violation work without permit - active
  • Construction other optional

    C-construction other optional

    Nov 30, 2006

    Vw-violation work without permit - active
  • Construction other optional

    Work without a permit,work noted:section of exterior brick wall at entrance to basement demo,new brick work construction in progress interior partition walls and ceiling demo remedy:stop all work immediately.,make site safe, obtain a permit.call dob@(718/802/3685)prior to returning to work

    Nov 3, 2006

    Vw-violation work without permit - active

ECB violations · 23

  • Class - 1

    Failure to safeguard site noticed at time of inspection.noticed building construction site not secured and accessible to public.windows not boarded up.basement accessible to public.no workers on site.rem:stop a

    Feb 23, 2017

    Active
  • Class - 1

    Failure to safe guard site.noticed at time of inspection.noticed bldg construction site not secured and accessible to public.windows not boarded up,basement accessible to public way.no workers on site.rem:stop

    Feb 23, 2017 · Penalty $10,000

    Resolve
  • Class - 1

    Contrary to approved documents.noticed at time of inspection.permit for job is for site perperation and interior demo only.work on going on site noticed all new wood framing thru out entire.rem:stop all work an

    Feb 23, 2017 · Penalty $500

    Active
  • Class - 1

    Contrary to approved documents.noted at time of inspection.permit for job is for job preportion and interior demo only.work on going on sitenoticed all new wood framing thru out entire site.rem:stop all work co

    Feb 23, 2017 · Penalty $500

    Active
  • Class - 2

    Work without permit.no shed permit.noticed at time of inspection sws installed at exp 1 without permit.permit in system in process.rem:stop all work obtain shed permit.

    Feb 22, 2017 · Penalty $800

    Resolve
  • Class - 2

    No approved plans on site.noticed at time of inspection alt work in progress workers on site doing various trades no approved plans on site.rem:stop all work provide approved plans.

    Feb 22, 2017 · Penalty $500

    Resolve
  • Class - 1

    Electrical work without permit.noticed temp lights ran thru out building noticed electrical lines and fixtures removed without permit.rem:stop all electric work obtain permit.

    Feb 22, 2017 · Penalty $800

    Active
  • Class - 1

    No guard rails noticed at time of inspection alt work in progress noticed at window opening thru out entire building no guard rails providedrem;stop all work provide guard rails provided.rem:stop all wrk provid

    Feb 22, 2017 · Penalty $1,200

    Resolve
  • Class - 1

    No handrails.noticed at time of inspection alt work in progress noticed permanant stairs installed and in use with no handrails on 1st to 2nd flr and 3rd to roof.rem:stop all work provide handrails.

    Feb 22, 2017 · Penalty $1,000

    Resolve
  • Class - 1

    Bc3309.10/no roof protection.noticed at time of inspection alt work inprogress noticed at exp 2 adjacent roof not protected.alt work on going above roof debri falling on roof.rem:stop all work within 10ft exp 2

    Feb 22, 2017 · Penalty $1,600

    Resolve
Show 13 more ↓
  • Class - 2

    Bc3303.3/failure to have dot permit for sidewalk observation.noticed at time of inspection material stored on side walk without dot permit.rem:obtain dot permit.

    Feb 22, 2017 · Penalty $800

    Resolve
  • Class - 1

    Bc3303.4.1/failure to maintain side walk trip hazard free.noticed at time of inspection at exp 1 pedestrian side walk has tripping hazards.sidewalk cracked and uneven causing tripping hazard to public way.rem:

    Feb 22, 2017 · Penalty $800

    Resolve
  • Class - 2

    Failure to have approved plans on site,noticed at time of inspection workers on site doing various trades no approved plans on site.rem:stopall work provide approved plans.

    Feb 22, 2017 · Penalty $250

    Resolve
  • Class - 1

    Electrical work without permit.noticed at time of inspection temp electric ran thru out entire building as well as electrical lines and fixtures removed without electric permit.rem:stop all electric work obtain

    Feb 22, 2017 · Penalty $1,600

    Active
  • Class - 1

    Bc3307.3/no overhead protection,noticed at time of inspection alt workin progress.noticed at exp 4 adjacent property rear yard has no overhead protection.work on going above yard.rem:stop all work within 10ft o

    Feb 22, 2017 · Penalty $1,600

    Active
  • Class - 1

    No guard rails.noticed at time of inspection guard rolls missing thru out entire bldg all window openings have no guard rails.rem:stop all work provide guard rails.

    Feb 22, 2017 · Penalty $1,200

    Active
  • Class - 1

    Failure to maintain housekeeping noticed at time of inspection housekeeping thru out entire bldg not maintained to code.debri piles thru outwith workers working on top of.rem:stop all work maintain housekeeping

    Feb 22, 2017 · Penalty $2,400

    Resolve
  • Class - 1

    Failure to maintain housekeeping to code.noticed at time of inspectionalt working progress noticed housekeeping thru out entire building notto code.debri piles thru out with workers working on debri.debri block

    Feb 22, 2017 · Penalty $2,400

    Resolve
  • Class - 1

    Bc3309.10/no roof protection noticed at time of inspection alt work inprogress noticed at exp 4 adjacent,1 story roof not protected.work on going above roof.rem;stop all work within 10ft exp 4 provide protectio

    Feb 22, 2017

    Resolve
  • Class - 1

    Unlawful acts failure to comply w /an order of the comm in that there is a vacate order on file 7/7/08 1st fl occupied at the time of insp rem: comply w/ vacate order 7/7/08 & reseal openings in bldg

    Jun 20, 2010 · Penalty $12,000

    Active
  • Class - 2

    Failure to maintain bldg walls or appurtenances. noted: area at front of bldg leading to basement is filled w/combustible garbage & debris. remedy: maintain bldg. remove all debris.

    Oct 23, 2009 · Penalty $2,500

    Active
  • Class - 1

    Failure to maintain bldg in code compliant manner note interior of 3sty bldg in grave need of repair at 1st observed 3 broken joist and 2 cut making fl structuraly unstable excessive debris piled front bsmt to

    Jul 7, 2008 · Penalty $5,000

    Active
  • Non-hazardous

    Failure to maintain bldg.- hazardous- noted: burst pipe at ceiling in cellar/basement hallway w/water spewing into basement. both basement rear doors open. 6" sag in fl throughout. remedy: fix leak in pipes/sea

    Feb 13, 2006

    Resolve

Complaints

  • Plumbing

    Toilet

    Aug 20, 2026 · Apt 3

    Close
  • Plumbing

    Bathtub/shower

    Aug 20, 2026 · Apt 3

    Close
  • Flooring/stairs

    Floor

    Aug 20, 2026 · Apt 3

    Close
  • Water leak

    Heavy flow

    Jun 24, 2026 · Apt APT2

    Close
  • Water leak

    Slow leak

    Jun 24, 2026 · Apt 1B

    Close
  • Water leak

    Slow leak

    Jun 23, 2026 · Apt 1B

    Close
  • Unsanitary condition

    Mold

    Jun 23, 2026 · Apt 1B

    Close
  • Water leak

    Heavy flow

    Jun 23, 2026 · Apt 3

    Close
  • Water leak

    Heavy flow

    Jun 23, 2026 · Apt 2

    Close
  • Water leak

    Damp spot

    Feb 4, 2026 · Apt 2

    Close
Show 40 more ↓
  • Electric

    Power outage

    Feb 4, 2026 · Apt 2

    Close
  • Water leak

    Slow leak

    Jan 8, 2026 · Apt 2

    Close
  • Unsanitary condition

    Mold

    Jan 8, 2026 · Apt 2

    Close
  • Paint/plaster

    Ceiling

    Jan 8, 2026 · Apt 2

    Close
  • Paint/plaster

    Ceiling

    Dec 17, 2025 · Apt 3

    Close
  • Unsanitary condition

    Mold

    Apr 4, 2024 · Apt 1

    Close
  • Water leak

    Heavy flow

    Apr 1, 2024 · Apt 1

    Close
  • Unsanitary condition

    Sewage

    Feb 15, 2023 · Apt B

    Close
  • Electric

    Power outage

    Jan 18, 2023 · Apt 2

    Close
  • Unsanitary condition

    Pests

    Aug 23, 2019 · Apt 2

    Close
  • Unsanitary condition

    Pests

    Aug 23, 2019 · Apt 2

    Close
  • Unsanitary condition

    Pests

    Aug 22, 2019 · Apt B

    Close
  • Door/window

    Door

    Aug 22, 2019 · Apt B

    Close
  • Unsanitary condition

    Mold

    Aug 22, 2019 · Apt B

    Close
  • Flooring/stairs

    Floor

    Aug 22, 2019 · Apt B

    Close
  • Water leak

    Heavy flow

    Aug 22, 2019 · Apt B

    Close
  • Unsanitary condition

    Pests

    Aug 22, 2019 · Apt B

    Close
  • Flooring/stairs

    Floor

    Aug 22, 2019 · Apt B

    Close
  • Water leak

    Heavy flow

    Aug 2, 2019 · Apt B

    Close
  • Paint/plaster

    Wall

    Aug 2, 2019 · Apt B

    Close
  • Flooring/stairs

    Floor

    Aug 2, 2019 · Apt B

    Close
  • Unsanitary condition

    Mold

    Aug 2, 2019 · Apt B

    Close
  • Flooring/stairs

    Floor

    Aug 2, 2019 · Apt BASEME

    Close
  • Unsanitary condition

    Mold

    Aug 2, 2019 · Apt BASEME

    Close
  • Door/window

    Door

    Sep 6, 2018 · Apt B

    Close
  • Water leak

    Slow leak

    Aug 17, 2018 · Apt 1

    Close
  • Flooring/stairs

    Floor

    Aug 17, 2018 · Apt 1

    Close
  • Electric

    Wiring

    Aug 17, 2018 · Apt 1

    Close
  • Unsanitary condition

    Mold

    Aug 17, 2018 · Apt 1

    Close
  • Heating

    Heat related

    Feb 13, 2006 · Apt 3

    Close
  • Plumbing

    Water supply

    Feb 13, 2006 · Apt 3

    Close
  • Construction

    Rain leader

    Feb 10, 2006 · Apt 3

    Close
  • General

    Fire-escape

    Feb 10, 2006 · Apt 3

    Close
  • General

    Doors

    Jan 11, 2006 · Apt 3

    Close
  • General

    Windows

    Dec 16, 2005 · Apt 3

    Close
  • Plumbing

    Toilet

    Dec 16, 2005 · Apt 3

    Close
  • Paint/plaster

    Ceiling

    Dec 16, 2005 · Apt 3

    Close
  • Plumbing

    Water-leaks

    Dec 16, 2005 · Apt 3

    Close
  • Electric

    Lighting

    Dec 16, 2005 · Apt 3

    Close
  • Electric

    Lighting

    Dec 16, 2005 · Apt 3

    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 (C3)
Year built
1920
Floors
3
Residential units
4
Building area
3,300 ft²
Lot area
2,265 ft²
Zoning
M1-4/R7A
Community board
306
Council district
39
Block / lot
433 / 57
Assessed value
$815,400
Landmark / historic district
No

HPD registration #367110, last renewed Sep 22, 2025.

Questions about 555 Union Street

Who owns 555 Union Street?

The owner of record in NYC Department of City Planning PLUTO data is Union Residence LLC.

Does 555 Union Street have violations?

Yes. NYC HPD has recorded 61 housing violations at this property.

Is 555 Union Street rent stabilized?

No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.

When was 555 Union Street built?

City records list 1920 as the year it was built.

How many apartments are in 555 Union Street?

It has 4 residential units.

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