423 Throop Avenue at a glance
423 Throop Avenue, Brooklyn has 209 open city records on file, 45 of them Class C (immediately hazardous), and no balance recorded as due on OATH/ECB summonses. The most recent record is dated Nov 14, 2025.
Open Class C
45
Immediately hazardous — click to see them
Open Class B
145
Hazardous — click to see them
Open Class A
19
Non-hazardous — click to see them
Fines due
$0.00
Balance on OATH/ECB summonses
Permits on file
6
Construction permits filed with DOB
Last activity
Nov 14, 2025
HPD record
Health score for 423 Throop Avenue
A composite of the public indicators below. How it is scored.
Record timeline for 423 Throop Avenue
Showing the 300 most recent of 360 records; the CSV has the full history. Class A, B and C are HPD’s hazard tiers: C is immediately hazardous, A and B explained here.
300 of 300 shown
May 6, 2026
Nov 14, 2025
Jun 26, 2025
Jun 11, 2025
Sep 23, 2024
Apr 12, 2024
Dec 4, 2023
Dec 4, 2023
Dec 4, 2023
Nov 21, 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
Oct 23, 2023
Oct 23, 2023
Jun 30, 2023
Apr 25, 2023
Mar 27, 2023
Nov 10, 2022
Mar 2, 2022
Mar 22, 2021
Mar 22, 2021
OATH / ECB summonses & fines at 423 Throop Avenue
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. New to these? How an OATH summons becomes a penalty, explained.