Brooklyn · Block 1311 · Lot 34 · 11225

646 Montgomery Street

2 floors · 2 apartments · 2,922 sq ft · built 1920 · class B1 · owner of record: The E Chen Irrevocable Trust

3open violations

$0ECB/OATH penalties owed

0HPD class C (immediately hazardous)

304dto Annual property registration

New violations the morning after they're issued, plus deadline reminders. Free for one building.

Compliance deadlines

Requirement	Due	Status
Annual property registration Check HPD registration · September 1 each year What this is Residential buildings with three or more units, and one- and two-family homes the owner doesn't occupy, register with HPD every year ($13 fee). An unregistered building can't start a nonpayment case in Housing Court and faces civil penalties. Agency page	Sep 1, 2027 in 304 days	Required only if the owner doesn't live there

ECB / OATH (0)

None open.

DOB (3)

Issued	Violation	Status
May 4, 2001	CONSTRUCTION WORK WITHOUT A PERMIT. WORK NOTED: A FRONT EXTENSION APPROX TO 3RD FL PORCH AREA WAS CLOSED UP APPROX 7'X 15'X 15' AREA AT FRONT 2ND FLOOR OF BUILDING REMEDY: OBTAIN A PERMIT FORTHWITH #09A02	VIOLATION WORK WITHOUT PERMIT - ACTIVE
May 4, 2001	CONSTRUCTION WORK WITHOUT A PERMIT. WORK NOTED: A FRONT EXTENSION TO 3RD FLOOR PORCH AREA WAS CLOSED #09A02	VIOLATION WORK WITHOUT PERMIT - ACTIVE
Aug 30, 1999	CONSTRUCTION #09HD01	DOB VIOLATION - ACTIVE

DOB NOW Safety (0)

None open.

HPD (0)

None open.

City records as of Nov 1, 2026, 4:23 PM ET. BBL 3013110034.