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421 Throop Avenue

BrooklynBIN 3050770
$4,686.00 recorded as dueHPD registration valid
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OverviewHealth scoreTimelineFinesOwner
Open Class C
0
Immediately hazardous
Open Class B
2
Hazardous
Open Class A
0
Non-hazardous
Fines due
$4,686.00
Balance on OATH/ECB summonses
Permits on file
6
DOB permit records
Last activity
Dec 3, 2025
Bedbugs record

Building health score

A composite of public indicators. Every input is a public record. See the full methodology.

A
Health score · Jul 29, 2026
Scored from all 34 public records for this building
Open Class C violations
Immediately hazardous, uncertified
This building 0
Open Class B violations
Hazardous
This building 2
Heat & hot water records
Violations and complaints, last 24 months
This building 0
Unpaid penalties
OATH/ECB summonses with balance due
This building $4,686
Bedbug filings with infestations
Annual LL69 filings on record
This building 0
Tenant litigation
Open HP actions in Housing Court
This building 0
Active vacate order
HPD or FDNY order to vacate, still in effect
This building No

Unified timeline

Every record from every agency, interleaved. 34 records on file.

Download this timeline (CSV) →
Dec 3, 2025
Nov 14, 2025
Jan 22, 2025
Dec 7, 2023
Mar 20, 2023
Mar 14, 2022
May 12, 2021
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Jan 24, 2018
Dec 12, 2017
Apr 27, 2017
Mar 3, 2015
Feb 27, 2015
Jan 19, 2007
Oct 26, 2004
Jan 7, 2002
Dec 14, 2001
Apr 19, 2001
Feb 27, 2001
Feb 27, 2001
Aug 7, 2000
Jul 19, 2000
Feb 7, 2000
Feb 7, 2000
Mar 16, 1999
Mar 16, 1999
May 4, 1998

OATH / ECB summonses & fines

$4,686.00 is recorded as due across the 5 summonses below, out of $7,436.00 in penalties imposed. The city’s published records do not show whether a penalty was paid, reduced, or written off.

OATH and ECB summonses for 421 Throop Avenue
554123Mar 16, 2021GAS METER ROOM HAS STORAGE/GAS METER ROOM UNVENTILATED/ HWH SAFETY DISJul 21, 2021DEFAULT$1,562.00
554256Mar 16, 20213RD FLOOR APT BOILER=BOILER SAFETY VALVE NOT IN THE UPRIGHT POSITION/LJul 21, 2021DEFAULT$1,562.00
554519Mar 16, 20212ND FLOOR APT BOILER=BOILER SAFETY VALVE LEAKING/BACKFLOW NOT PIPED DOJul 21, 2021DEFAULT$1,562.00
1376579Apr 27, 2017FAILURE TO MAINTAIN BLDG IN CODE COMPLIANT MANNER: NO FIRE STOPPING PEJul 10, 2017IN VIOLATION—
1375417Feb 27, 2015EXIT DOOR NOT SELF-CLOSING NOTED: 3 EXIT DOOR AT FIRST FLR PRESCHOOL Apr 13, 2015Resolved—