21 Adelphi Street
Brooklyn, NY 11205BBL 3-02032-0014Map
Owner of record: 21 Adelphi LLC
21 Adelphi Street is a walk-up apartment building built in 1915 in Brooklyn, 11205. It has 8 residential units across 4 floors. The owner of record is 21 Adelphi LLC. HPD has recorded 29 housing violations here, most recently on May 1, 2026. 11 of the 29 most recent violations are still open. City tax records listed 1 rent-stabilized apartment here in 2024.
- HPD violations
- 29
- DOB violations
- 17
- ECB violations
- 2
- HPD complaints
- 21
What to know
Immediately hazardous issues among recent violations are still open.
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 · 29
- 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 1, 2026
Open — Nov sent out - 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.
Jun 6, 2025
Open — Nov sent out - CImmediately hazardous
Provide an adequate supply of heat for the apartment in the entire apartment located at apt 4l, 4th story, 1st apartment from north at east
Dec 7, 2024 · Apt 4L
Open — Nov certified late - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective door at vestibule , 1st story
Dec 7, 2024
Open — Nov certified late - CImmediately hazardous
Provide ready access to buildings heating system door locked at cellar
Dec 7, 2024
Open — Nov certified late - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 4l, 4th story, 1st apartment from west at north
Dec 7, 2024 · Apt 4L
Closed — Violation closed - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 4l, 4th story, 1st apartment from west at north
Dec 7, 2024 · Apt 4L
Open — Nov certified late - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 4l, 4th story, 1st apartment from west at north
Dec 7, 2024 · Apt 4L
Open — Nov certified late - ANon-hazardous
Paint with light colored paint to the satisfaction of this department all walls and ceiling in the entire apartment located at apt 4l, 4th story, 1st apartment from west at north
Dec 7, 2024 · Apt 4L
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the kitchen located at apt 4l, 4th story, 1st apartment from west at north
Dec 7, 2024 · Apt 4L
Open — Nov certified late
Show 19 more ↓
- ANon-hazardous
Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected at public hall
Nov 30, 2024
Open — Invalid certification - ANon-hazardous
Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mail box missing at public hall
Nov 30, 2024
Open — Invalid certification - ANon-hazardous
Post and maintain a proper notice on wall of the entrance story in english and spanish on the availability of the agencys housing information guide. a sample notice can be found at www.nyc.gov/hpd. at public hall
Nov 30, 2024
Open — Invalid certification - 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 21, 2023
Closed — Violation dismissed - CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective ... at public hall
Aug 8, 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.
Feb 23, 2022
Closed — Violation dismissed - CImmediately hazardous
Properly repair the broken or defective lock at building entrance door , 1st story
May 27, 2021
Closed — Violation closed - 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 ... at public hall, 1st story
Apr 20, 2021
Closed — Violation dismissed - IInformation / order
Apts have been vacated by this department and cannot be reoccupied until so ordered after proof of compliance for apts 1l vacate # 162904
Apr 20, 2021
Closed — Violation closed - CImmediately hazardous
Properly repair the broken or defective locking mechnaism at front door entrance to building
Apr 20, 2021
Closed — Violation closed - BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 2l, 2nd story, 2nd apartment from west at north
Apr 8, 2021 · Apt 2L
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 2l, 2nd story, 2nd apartment from west at north
Apr 8, 2021 · Apt 2L
Closed — Violation dismissed - CImmediately hazardous
M/d law abate the nuisance consisting of fire damage in the entire apartment located at apt 1l, 1st story, 2nd apartment from west at north
Apr 8, 2021 · Apt 1L
Closed — Violation closed - CImmediately hazardous
Replace with new the broken or defective door in the entrance located at apt 2l, 2nd story, 2nd apartment from west at north
Apr 8, 2021 · Apt 2L
Closed — Violation closed - 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 7, 2021
Closed — Violation dismissed - IInformation / order
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 15, 2018
Closed — Violation dismissed - IInformation / order
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 17, 2017
Closed — Violation dismissed - IInformation / order
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 3, 2016
Closed — Violation dismissed - BHazardous
Properly repair the broken or defective bell/buzzer intercom system located at apt 4l, 4th story, 1st apartment from north at east
Mar 30, 2016 · Apt 4L
Closed — Violation closed
DOB building violations · 17
- Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Oct 4, 2023
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Oct 4, 2023
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued-failure to file 2018 external low pressure inspection
Jun 20, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2019 external low pressure inspection
Jun 20, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2017 inspection report
Nov 8, 2019
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2015 inspection report
Feb 24, 2017
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2014 inspection report
Oct 1, 2015
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2013 inspection report
Mar 3, 2015
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2010 inspection report
Dec 13, 2011
Dob violation - dismissed
Show 7 more ↓
- Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 6, 2006
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 16, 1999
Dob violation - dismissed - Boiler boiler optional
B-boiler boiler optional
Mar 14, 1996
Vp-violation unserved ecb-active - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 29, 1995
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1994
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 16, 1993
Dob violation - active - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1993
Dob violation - dismissed
ECB violations · 2
- Class - 1
Work does not conform to approved construction documents and/or approved amendments.noted:at time of inspection observed plans do not indicate stair opening btw 1st floor and cellar as new.floor joist have been
Jun 22, 2023 · Penalty $1,250
Resolve - Class - 1
Work without permit:noted:at time of inspection observed work in progress in apt 1l,new was 5x supply lines and sanitary for kitchen site.norecord of plumbing permit issued according to dob records.rem:obtain p
Jun 22, 2023 · Penalty $1,250
Resolve
Complaints
- Heat/hot water
Apartment only
Jan 10, 2025 · Apt 4L
Close - General
Bell/buzzer/intercom
Mar 16, 2016 · Apt 4L
Close - General
Bell/buzzer/intercom
Mar 16, 2016 · Apt 4L
Close - Plumbing
Water supply
Jul 19, 2013 · Apt 4L
Close - Plumbing
Water supply
May 11, 2013 · Apt 4L
Close - Plumbing
Water supply
May 11, 2013 · Apt 4L
Close - General
Floor
Mar 9, 2012 · Apt 4R
Close - Plumbing
Water-leaks
Mar 9, 2012 · Apt 4R
Close - Paint/plaster
Ceiling
Mar 9, 2012 · Apt 4R
Close - General
Window guards
Mar 9, 2012 · Apt 4R
Close
Show 11 more ↓
- General
Windows
Mar 9, 2012 · Apt 4R
Close - General
Windows
Mar 9, 2012 · Apt 4R
Close - General
Locks
Mar 9, 2012 · Apt 4R
Close - General
Locks
Mar 9, 2012 · Apt 4R
Close - Heating
Heat related
Mar 13, 2010 · Apt 4L
Close - Nonconst
Vermin
Jul 10, 2009 · Apt 2R
Close - Heating
Heat related
Mar 5, 2009 · Apt 4L
Close - Heating
Heat related
Mar 5, 2009 · Apt 4L
Close - Heating
Heat related
Mar 3, 2009 · Apt 4L
Close - Heating
Heat related
Dec 3, 2005 · Apt 3R
Close - Heating
Heat related
Oct 28, 2003 · Apt BLDG
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C1)
- Year built
- 1915
- Floors
- 4
- Residential units
- 8
- Building area
- 5,500 ft²
- Lot area
- 2,500 ft²
- Zoning
- M1-2
- Community board
- 302
- Council district
- 35
- Block / lot
- 2032 / 14
- Assessed value
- $841,500
- Landmark / historic district
- No
HPD registration #337872, last renewed Jul 23, 2026.
Questions about 21 Adelphi Street
Who owns 21 Adelphi Street?
The owner of record in NYC Department of City Planning PLUTO data is 21 Adelphi LLC.
Does 21 Adelphi Street have violations?
Yes. NYC HPD has recorded 29 housing violations at this property.
Is 21 Adelphi Street rent stabilized?
NYC Department of Finance tax bills listed 1 rent-stabilized units here in 2024 (about 13% of its 8 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 21 Adelphi Street built?
City records list 1915 as the year it was built.
How many apartments are in 21 Adelphi Street?
It has 8 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.