8509 21 Avenue
Brooklyn, NY 11214BBL 3-06347-0007Map
Owner of record: 8509-21st Ave Rlty Corp
8509 21 Avenue is a mixed residential and retail building built in 1930 in Brooklyn, 11214. It has 2 residential units across 3 floors. The owner of record is 8509-21st Ave Rlty Corp. HPD has recorded 3 housing violations here, most recently on November 24, 2025.
- HPD violations
- 3
- DOB violations
- 8
- ECB violations
- 1
- HPD complaints
- 0
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
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 3
- 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 24, 2025
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 28, 2023
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 30, 2018
Closed — Violation dismissed
DOB building violations · 8
- Low pressure boiler boiler required
Violation issued-failure to file 2024 external low pressure inspection
Nov 14, 2025
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 19, 2003
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1994
Dob violation - active - Boiler boiler optional
B-boiler boiler optional
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
Aug 16, 1993
Dob violation - active - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jun 1, 1993
Dob violation - active - Boiler boiler optional
B-boiler boiler optional
Jun 1, 1993
Dob violation - dismissed
ECB violations · 1
- Class - 2
Failure to provide approved,accepted plans at jobsite,at time of inspection premises under p.c. alt iii 320182191,expired 02-16-11.note:at time of inspection no plans provided at jobsite for inspection.rmdy:ob
May 13, 2013 · Penalty $250
Resolve
Complaints
No HPD complaints in our records
Sales history
No recorded sales in our data
Building details
- Building type
- Mixed residential and retail building (S2)
- Year built
- 1930
- Floors
- 3
- Residential units
- 2
- Building area
- 3,324 ft²
- Lot area
- 1,400 ft²
- Zoning
- C4-2
- Community board
- 311
- Council district
- 43
- Block / lot
- 6347 / 7
- Assessed value
- $100,020
- Landmark / historic district
- No
HPD registration #817678, last renewed Sep 23, 2024.
Questions about 8509 21 Avenue
Who owns 8509 21 Avenue?
The owner of record in NYC Department of City Planning PLUTO data is 8509-21st Ave Rlty Corp.
Does 8509 21 Avenue have violations?
Yes. NYC HPD has recorded 3 housing violations at this property.
Is 8509 21 Avenue 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 8509 21 Avenue built?
City records list 1930 as the year it was built.
How many apartments are in 8509 21 Avenue?
It has 2 residential units and 3 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.