820 Classon Avenue
Brooklyn, NY 11238BBL 3-01177-0033Map
Owner of record: Classon Bk Development LLC
820 Classon Avenue is a walk-up apartment building built in 1920 in Brooklyn, 11238. It has 8 residential units across 6 floors. The owner of record is Classon Bk Development LLC. HPD has recorded 12 housing violations here, most recently on May 4, 2026. 9 of the 12 most recent violations are still open. City tax records listed 7 rent-stabilized apartments here in 2019.
- HPD violations
- 12
- DOB violations
- 19
- ECB violations
- 12
- HPD complaints
- 8
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 · 12
- 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 4, 2026
Open — Nov sent out - 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 20, 2025
Open — Info 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 9, 2025
Open — Nov sent out - 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 29, 2024
Open — Info 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.
Apr 9, 2024
Open — Nov sent out - 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 22, 2023
Open — Info 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.
Mar 22, 2023
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.
Feb 23, 2022
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.
Apr 7, 2021
Open — Nov sent out - 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 4, 2016
Closed — Violation dismissed
Show 2 more ↓
- 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 8, 2015
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.
Feb 18, 2015
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 - Construction other optional
Borough commissioner order fswo to job# 321383150
Nov 8, 2021
Dob violation - dismissed - Construction other optional
Borough commissioner's order fswo to job permit# 321383150
Nov 8, 2021
Dob violation - dismissed - Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Jan 6, 2021
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 2013 inspection report
Mar 3, 2015
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2012 inspection report
May 15, 2014
Dob violation - dismissed - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2011 inspection report
Mar 1, 2013
Dob violation - dismissed - Low pressure boiler boiler required
Lblvio-low pressure boiler boiler required
Dec 31, 2009
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 1, 2009
Dob violation - dismissed
Show 9 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
Jan 31, 2005
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 27, 2001
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 16, 1999
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
May 4, 1998
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 10, 1997
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 · 12
- Class - 2
(sidewalk shed) - atoi of inactive jobsite i observed sidewalk shed in place at exposure #1 with inactive permit which expired on 03-17-2022. sidewalk shed requires an active permit at all times to remian insta
Nov 10, 2022 · Penalty $625
Resolve - Class - 2
Temp const equipment onsite-expired permit.(fence) atoi of inactive jobsite i observed const jobsite fence in place w/view panels inadequatenot allowing for view in jobsite as required sec3307.7.3.rev in bis sh
Feb 16, 2022 · Penalty $625
Resolve - Class - 2
Pedestrian protection failed to meet code spec atoi of proposed 6styalt1 inactive w/no one onsite i observed sws in place exp1 w/deteriorating mudsill for vert member/upright post.this is potential hazard for p
Feb 16, 2022 · Penalty $2,400
Resolve - Class - 1
Failure to provide supported pipe scaffold daily inspection logbook.attime of inspection observed active jorsing with construction activities on-going.upon request fordaily inspection logbook reviews for exist
Sep 22, 2020 · Penalty $625
Resolve - Class - 1
Provision of law:bc3307.65.10.1 no sidewalk shed daily inspection logpose.at time of inspection,observed active jobsite with construction activities ongoing.upon request for existing sws in full stop at daily i
Sep 22, 2020 · Penalty $625
Resolve - Class - 1
Wrk does not conform to approved construction docs/amendments.at time of inspection observed active jobsite w/ construction activities on-going.upon review of approved for rising c-joint/note:missing steel room
Sep 22, 2020 · Penalty $625
Resolve - Class - 2
Missingfence jobsite rear at time of inspection of a 6 story building i observed at exposure #3 rear yard area a missing section of the obsite fence full length this presented a potentiallu dangerous condition
Jul 9, 2020 · Penalty $500
Resolve - Class - 2
Sidewalk shed fence seal note at time of inspection i observed at exposure #1 there was no seal (netting) from top of jobsite fence to teh underside of sidewlak shed this created potentially hazardous condition
Jul 9, 2020 · Penalty $1,200
Resolve - Class - 2
Inadequate housekeeping at the time of my inspection of a 6 story building at exposure #3 rear yard piles of debris and construction mateirals posing a tripping hazard as well as blocking ingress/egress to scaf
Jul 9, 2020 · Penalty $625
Resolve - Class - 2
Bc3309.10-protetcion of roofs note at time of inspection of a 6 story building at the roof level of exposure #4 i observed roof protetcion in place for adjacent property with the exception of the parapet coping
Jul 9, 2020
Resolve
Show 2 more ↓
- Class - 1
Bc3307.4-warning signs personnel and barriers note at time of inspection of a 6 story building upon arrival i observed materials being stored in teh roadway of exposure #1 storage zoen causing obstruction and o
Jul 9, 2020 · Penalty $2,500
Resolve - Class - 2
Work does not conform to approved construction documents &/or approvedamendments: noted: ongoing alt1 job#321383150-permitted. to convert existing 7 units bldg to 9 units residence tr1 indicates underpinning,
Feb 6, 2020 · Penalty $625
Resolve
Complaints
- Paint/plaster
Ceiling
Dec 29, 2016 · Apt 3B
Close - Water leak
Slow leak
Dec 29, 2016 · Apt 3B
Close - Water leak
Slow leak
Dec 29, 2016 · Apt 3B
Close - Paint/plaster
Ceiling
Dec 29, 2016 · Apt 3B
Close - Nonconst
Vermin
Nov 28, 2006 · Apt 2B
Close - Nonconst
Vermin
Nov 28, 2006 · Apt 2B
Close - Nonconst
Vermin
Nov 27, 2006 · Apt 2B
Close - Nonconst
Vermin
Sep 28, 2006 · Apt 1R
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C1)
- Year built
- 1920
- Floors
- 6
- Residential units
- 8
- Building area
- 9,915 ft²
- Lot area
- 2,500 ft²
- Zoning
- —
- Community board
- 308
- Council district
- 35
- Block / lot
- 1177 / 33
- Assessed value
- $734,400
- Landmark / historic district
- No
HPD registration #326334, last renewed Nov 7, 2022.
Questions about 820 Classon Avenue
Who owns 820 Classon Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Classon Bk Development LLC.
Does 820 Classon Avenue have violations?
Yes. NYC HPD has recorded 12 housing violations at this property.
Is 820 Classon Avenue rent stabilized?
NYC Department of Finance tax bills listed 7 rent-stabilized units here in 2019 (about 88% of its 8 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 820 Classon Avenue built?
City records list 1920 as the year it was built.
How many apartments are in 820 Classon Avenue?
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.