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840 Jefferson Avenue, Brooklyn

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840 Jefferson Avenue at a glance

840 Jefferson Avenue, Brooklyn has 24 open city records on file, none of them Class C, and no balance recorded as due on OATH/ECB summonses. The most recent record is dated Jan 15, 2026.

Open Class C
0
Immediately hazardous — click to see them
Open Class B
24
Hazardous — click to see them
Open Class A
0
Non-hazardous — click to see them
Fines due
$0.00
Balance on OATH/ECB summonses
Permits on file
3
Construction permits filed with DOB
Last activity
Jan 15, 2026
Bedbugs record

Health score for 840 Jefferson Avenue

A composite of the public indicators below. How it is scored.

B
Health score · Aug 5, 2026
Scored from all 125 public records for this building
Open Class C violations
Immediately hazardous, uncertified
This building 0
Open Class B violations
Hazardous
This building 24
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

Record timeline for 840 Jefferson Avenue

125 records on file, every agency interleaved. Class A, B and C are HPD’s hazard tiers: C is immediately hazardous, A and B explained here.

Download this timeline (CSV) →

OATH / ECB summonses & fines at 840 Jefferson Avenue

No balance is recorded as due across the 2 summonses below, out of $1,800.00 in penalties imposed. Balances are as the city publishes them; a settlement or write-off that never reached the dataset will not show here. New to these? How an OATH summons becomes a penalty, explained.

OATH and ECB summonses for 840 Jefferson Avenue
179979Sep 13, 2004FAILURE TO MAINTAIN EXTERIOR BUILDING WALL. NOTED: SEPARATION AT NORTHFeb 9, 2005Found in violation
142035Oct 14, 1992FAILURE TO MAINTAIN EXTERIOR BUILDING WALL. DEFECT IS CHIMNEY AT ROOF Nov 30, 1992Written off