6509 20 Avenue
Brooklyn, NY 11204BBL 3-05556-0007Map
Owner of record: Li, Kai Lin
6509 20 Avenue is a mixed residential and retail building built in 1931 in Brooklyn, 11204. It has 3 residential units across 3 floors. The owner of record is Li, Kai Lin. HPD has recorded 6 housing violations here, most recently on May 1, 2026.
- HPD violations
- 6
- DOB violations
- 7
- ECB violations
- 3
- HPD complaints
- 2
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 · 6
- 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
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.
Jun 6, 2025
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.
Apr 3, 2024
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.
Mar 20, 2023
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 22, 2022
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 1, 2016
Closed — Violation dismissed
DOB building violations · 7
- Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - active - 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 2012 inspection report
May 15, 2014
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 - 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
ECB violations · 3
- Class - 3
B354,36.
Dec 29, 2008 · Penalty $200
Resolve - Class - 2
B201,50a,b. 50a. work w/o a permit 28-105.1. 50b. work permit filed w/dob for the replacement boiler: matco.
Dec 29, 2008 · Penalty $800
Resolve - Class - 3
B354,36.
Dec 29, 2008 · Penalty $200
Resolve
Complaints
- Heating
Heat related
Dec 3, 2009 · Apt 3FL
Close - Heating
Heat related
Nov 22, 2008 · Apt 3FL
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Mixed residential and retail building (S3)
- Year built
- 1931
- Floors
- 3
- Residential units
- 3
- Building area
- 3,300 ft²
- Lot area
- 1,810 ft²
- Zoning
- R5
- Community board
- 311
- Council district
- 43
- Block / lot
- 5556 / 7
- Assessed value
- $497,700
- Landmark / historic district
- No
HPD registration #328209, last renewed Nov 12, 2025.
Questions about 6509 20 Avenue
Who owns 6509 20 Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Li, Kai Lin.
Does 6509 20 Avenue have violations?
Yes. NYC HPD has recorded 6 housing violations at this property.
Is 6509 20 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 6509 20 Avenue built?
City records list 1931 as the year it was built.
How many apartments are in 6509 20 Avenue?
It has 3 residential units and 4 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.