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221 Knickerbocker Avenue

BrooklynBIN 3328112
5 open Class CHPD registration valid
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OverviewHealth scoreTimelineFinesOwner
Open Class C
5
Immediately hazardous
Open Class B
13
Hazardous
Open Class A
1
Non-hazardous
Fines due
$0.00
Balance on OATH/ECB summonses
Permits on file
7
DOB permit records
Last activity
Jun 8, 2026
Bedbugs record

Building health score

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

D
Health score · Jul 30, 2026
Scored from all 38 public records for this building
Open Class C violations
Immediately hazardous, uncertified
This building 5
Open Class B violations
Hazardous
This building 13
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 No

Unified timeline

Every record from every agency, interleaved. 38 records on file.

Download this timeline (CSV) →
Jun 8, 2026
Jul 28, 2025
Apr 26, 2024
Apr 10, 2024
Apr 16, 2023
Mar 5, 2022
Apr 23, 2021
Nov 10, 2016
Jun 3, 2015
Apr 7, 2014
Oct 15, 2013
Jan 8, 2013
Jul 16, 2012
Feb 22, 2012
Apr 16, 2009
Apr 16, 2009
Apr 16, 2009
Apr 16, 2009
Oct 31, 2008
Oct 28, 2008
Oct 15, 2008
Aug 5, 2008
Aug 5, 2008
Jul 14, 2008
Jul 14, 2008
Jun 26, 2008
Jun 26, 2008
Jun 26, 2008
Jun 26, 2008
Jun 26, 2008

OATH / ECB summonses & fines

No OATH or ECB summons carrying a penalty is published against this BIN. Summonses issued to a different BIN at the same address, or filed without a building identifier, will not appear here.