521 Throop Avenue
Brooklyn, NY 11221BBL 3-01831-0002Map
Owner of record: Dean, Estelle
521 Throop Avenue is a walk-up apartment building built in 1905 in Brooklyn, 11221. It has 4 residential units across 4 floors. The owner of record is Dean, Estelle. HPD has recorded 43 housing violations here, most recently on June 11, 2025. 32 of the 43 most recent violations are still open.
- HPD violations
- 43
- DOB violations
- 0
- ECB violations
- 0
- HPD complaints
- 42
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 · 43
- 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 11, 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 27, 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.
Apr 12, 2024
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 21, 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.
Mar 27, 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.
Nov 10, 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.
Mar 2, 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.
Mar 2, 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.
Apr 13, 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 22, 2018
Closed — Violation dismissed
Show 33 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.
Nov 15, 2016
Closed — Violation dismissed - BHazardous
Fire egress defective. remove obstructing bars or unlawful gates from window to fire escape or provide approved type gate .. in the kitchen located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at all walls and ceiling inside closet in the private hallway located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Abate the nuisance consisting of roaches in the entire apartment located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Abate the nuisance consisting of mice in the entire apartment located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Properly repair the broken or defective lower sash counter balances at south and central windows in the 4th room from east at north located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Repair the broken or defective connection at wasteline for sink in the kitchen located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Properly repair with similar material the broken or defective hole by sink at wooden floor in the kitchen located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Properly repair the broken or defective lower sash counter balance at east window in the kitchen located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at west wall in the 1st room from east at north located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Properly repair the broken or defective sliding door at east wall in the 4th room from east at north located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Properly secure the loose door at west wall in the 2nd room from east at north located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair or replace the smoke detector defective located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Properly repair the broken or defective intercommunication system located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the 2nd room from east at north located at apt 4, 4th story, apartment at east
Mar 25, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Properly repair the broken or defective intercom in the entire apartment located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ceiling in the 2nd room from east at north located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Properly repair the broken or defective upper sash at window so it closes properly in the 4th room from east at north located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Refit door to 3rd room from east at north in the 4th room from east at north located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair or replace the smoke detector defective located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Abate the nuisance consisting of roaches in the entire apartment located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Abate the nuisance consisting of mice in the entire apartment located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Repair the broken or defective plastered surfaces and paint in a uniform color walls and ceiling in the 3rd room from east at south located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair the broken or defective connection on drain line at sink in the kitchen located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Properly repair the broken or defective upper sash so it closes properly in the kitchen located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - ANon-hazardous
Properly repair the broken or defective door to private hall in the 2nd room from east at north located at apt 4, 4th story, apartment at east
Mar 1, 2012 · Apt 4
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ceiling in the 2nd room from north located at apt 4fl, 4th story, 1st apartment from south at west
Feb 12, 2012 · Apt 4FL
Open — Nov sent out - BHazardous
Properly repair the broken or defective door in the 2nd room from north located at apt 4fl, 4th story, 1st apartment from south at west
Feb 12, 2012 · Apt 4FL
Open — Nov sent out - BHazardous
Provide an approved and operational carbon monoxide detecting device, installed in accordance with applicable law and rules. located at apt 4fl, 4th story, 1st apartment from south at west
Feb 12, 2012 · Apt 4FL
Open — Nov sent out - BHazardous
Repair or replace the smoke detector missing located at apt 4fl, 4th story, 1st apartment from south at west
Feb 12, 2012 · Apt 4FL
Open — Nov sent out - BHazardous
Abate the nuisance consisting of mice located at apt 4fl, 4th story, 1st apartment from south at west
Feb 12, 2012 · Apt 4FL
Open — Nov sent out
DOB building violations · 0
No DOB violations on record
ECB violations · 0
No ECB violations on record
Complaints
- Nonconst
Vermin
Mar 22, 2012 · Apt 4
Close - Nonconst
Vermin
Mar 22, 2012 · Apt 4
Close - Nonconst
Vermin
Mar 22, 2012 · Apt 4
Close - General
Windows
Mar 22, 2012 · Apt 4
Close - Plumbing
Basin/sink
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Wall
Mar 22, 2012 · Apt 4
Close - General
Windows
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Wall
Mar 22, 2012 · Apt 4
Close - General
Doors
Mar 22, 2012 · Apt 4
Close - General
Doors
Mar 22, 2012 · Apt 4
Close
Show 32 more ↓
- Nonconst
Carbon monoxide
Mar 22, 2012 · Apt 4
Close - Nonconst
Carbon monoxide
Mar 22, 2012 · Apt 4
Close - Electric
Bell-buzzer/intercom
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Wall
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Ceiling
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Wall
Mar 22, 2012 · Apt 4
Close - Paint/plaster
Wall
Feb 27, 2012 · Apt 4
Close - General
Doors
Feb 27, 2012 · Apt 4
Close - General
Window guards
Feb 27, 2012 · Apt 4
Close - General
Windows
Feb 27, 2012 · Apt 4
Close - Plumbing
Basin/sink
Feb 27, 2012 · Apt 4
Close - General
Cabinet
Feb 27, 2012 · Apt 4
Close - Nonconst
Vermin
Feb 27, 2012 · Apt 4
Close - Nonconst
Vermin
Feb 27, 2012 · Apt 4
Close - Nonconst
Vermin
Feb 27, 2012 · Apt 4
Close - Nonconst
Smoke detector
Feb 27, 2012 · Apt 4
Close - Electric
Bell-buzzer/intercom
Feb 8, 2012 · Apt 4FL
Close - General
Doors
Feb 8, 2012 · Apt 4FL
Close - Plumbing
Basin/sink
Feb 8, 2012 · Apt 4FL
Close - General
Doors
Feb 8, 2012 · Apt 4FL
Close - Nonconst
Carbon monoxide
Feb 8, 2012 · Apt 4FL
Close - Electric
Wiring
Feb 8, 2012 · Apt 4FL
Close - Paint/plaster
Wall
Feb 8, 2012 · Apt 4FL
Close - Paint/plaster
Wall
Feb 8, 2012 · Apt 4FL
Close - Paint/plaster
Wall
Feb 8, 2012 · Apt 4FL
Close - General
Windows
Feb 8, 2012 · Apt 4FL
Close - Nonconst
Smoke detector
Feb 8, 2012 · Apt 4FL
Close - Nonconst
Vermin
Feb 8, 2012 · Apt 4FL
Close - Nonconst
Vermin
Feb 8, 2012 · Apt 4FL
Close - Nonconst
Vermin
Feb 8, 2012 · Apt 4FL
Close - Heating
Heat related
Feb 8, 2012 · Apt 4FL
Close - Heating
Heat related
Nov 17, 2011 · Apt 4
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C3)
- Year built
- 1905
- Floors
- 4
- Residential units
- 4
- Building area
- 4,800 ft²
- Lot area
- 1,800 ft²
- Zoning
- R6B
- Community board
- 303
- Council district
- 36
- Block / lot
- 1831 / 2
- Assessed value
- $589,500
- Landmark / historic district
- No
HPD registration #373506, last renewed Sep 16, 2025.
Questions about 521 Throop Avenue
Who owns 521 Throop Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Dean, Estelle.
Does 521 Throop Avenue have violations?
Yes. NYC HPD has recorded 43 housing violations at this property.
Is 521 Throop 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 521 Throop Avenue built?
City records list 1905 as the year it was built.
How many apartments are in 521 Throop Avenue?
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.