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423 Throop Avenue

BrooklynBIN 3050769
40 open Class CHPD registration valid
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OverviewHealth scoreTimelineFinesOwner
Open Class C
40
Immediately hazardous
Open Class B
89
Hazardous
Open Class A
12
Non-hazardous
Fines due
$0.00
Balance on OATH/ECB summonses
Permits on file
6
DOB permit records
Last activity
Nov 14, 2025
DOB record

Building health score

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

D
Health score · Jul 29, 2026
Scored from the 300 most recent of 320 public records for this building
Open Class C violations
Immediately hazardous, uncertified
This building 40
Open Class B violations
Hazardous
This building 89
Heat & hot water records
Violations and complaints, last 24 months
This building 0
Unpaid penalties
OATH/ECB summonses with balance due
This building $0
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 Yes

Unified timeline

Records from every agency, interleaved. Showing the 300 most recent of 320 records on file; the CSV below has the full history.

Download this timeline (CSV) →
Nov 14, 2025
Jun 26, 2025
Sep 23, 2024
Dec 4, 2023
Dec 4, 2023
Dec 4, 2023
Nov 15, 2023
Nov 15, 2023
Nov 13, 2023
Nov 13, 2023
Nov 13, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
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Oct 23, 2023
Jun 30, 2023
Apr 25, 2023
Mar 22, 2021
Mar 22, 2021
Dec 19, 2020
Sep 17, 2020
Dec 23, 2019
Nov 8, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019

OATH / ECB summonses & fines

No balance is recorded as due across the 10 summonses below, out of $65,625.00 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 423 Throop Avenue
1318155Mar 22, 2021HOLES IN WALLS AND CEILING AS PER BC 509.1,509.4.1 NO MANUAL RESET LWCJul 28, 2021DEFAULT
1403649Apr 11, 2017B265 AS PER CLASS 2 (B265) 28-303.7 FAILURE TO FILE A COMPLETE BOILERJun 5, 2017WRITTEN OFF
1286073Feb 26, 2010FAILURE TO MAINTAIN BUILDING IN CODE-COMPLAINT MANNER. NOTED: 3 STORIEApr 19, 2010WRITTEN OFF
1322772Dec 9, 2009OCCUPANCY CONTRARY TO THAT ALLOWED BY COFO & DOB RECODS.BLDG CONVERTEDSep 22, 2010WRITTEN OFF
1146442May 8, 2009FAILURE TO MAINTAIN BUILDING WALLS,OR APPURTENANCES. NOTED: OBSERVED CMar 15, 2010WRITTEN OFF
1146466May 8, 2009SEC. 28-201.1 FAILURE TO COMPLY WITH COMM-ORDER TO OBTAIN A PERMIT PERMar 15, 2010WRITTEN OFF
1196415Oct 14, 2008FAILURE TO MAINTAIN BLDG IN CODE COMPLIANT MANNER USE OF PROHIBTED DOODec 21, 2009WRITTEN OFF
1196505Oct 10, 2008WORK W/O A PERMIT WORK NOTED: FULL HEIGHT PARTITIONS ERECTED SUBDIVIDIDec 21, 2009WRITTEN OFF
1196416Oct 10, 2008OCCUPANCY CONTRARY TO THAT ALLOWED BY THE C OF O 84015 ISSUED 9/16/193Dec 21, 2009WRITTEN OFF
1325135Oct 9, 2008OCCUPANCY CONTRARY TO THAT ALLOWED BY C OF O AND DOB RECORDS. 3 STORY Mar 7, 2011WRITTEN OFF