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811 Knickerbocker Avenue

BrooklynBIN 3079114
HPD registration valid
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OverviewHealth scoreTimelineFinesOwner
Open Class C
0
Immediately hazardous
Open Class B
1
Hazardous
Open Class A
0
Non-hazardous
Fines due
$0.00
Balance on OATH/ECB summonses
Permits on file
13
DOB permit records
Last activity
May 18, 2026
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 38 public records for this building
Open Class C violations
Immediately hazardous, uncertified
This building 0
Open Class B violations
Hazardous
This building 1
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 1
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. 38 records on file.

Download this timeline (CSV) →
May 18, 2026
Jul 17, 2025
Apr 5, 2024
Jan 1, 2024
Dec 22, 2022
Jul 22, 2022
Dec 13, 2021
Dec 16, 2020
Jan 22, 2020
Apr 4, 2018
Mar 31, 2017
Mar 29, 2017
Mar 8, 2017
Jul 27, 2016
Jul 22, 2016
Mar 11, 2016
Jan 19, 2016
Nov 10, 2015
Oct 29, 2015
Jul 16, 2014
Jul 16, 2014
Jun 11, 2014
Jun 11, 2014
Jun 11, 2014
Jun 11, 2014
May 4, 1998
Sep 16, 1997
Feb 10, 1997
Aug 29, 1995
Jun 1, 1994

OATH / ECB summonses & fines

No balance is recorded as due across the 1 summons below, out of $350.00 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 811 Knickerbocker Avenue
575966Sep 1, 1992ALTERED BUILDING OCCUPIED WITHOUT A VALID C OF O. ENTIRE PREMISES Jan 4, 1993IN VIOLATION—