Brooklyn · Block 868 · Lot 23 · 11215

344 Prospect Avenue

2 floors · 2 apartments · 1,336 sq ft · built 1910 · class B2 · owner of record: Guerra, Rosa

2open violations
$0ECB/OATH penalties owed
0HPD class C (immediately hazardous)
309dto Annual property registration

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

Compliance deadlines

RequirementDueStatus
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 309 days
Required only if the owner doesn't live there

Open violations

ECB / OATH (0)

None open.

DOB (2)
IssuedViolationStatus
Jul 24, 2000CONSTRUCTION
HAZARDOUS. WORK WITHOUT A PERMIT. WORK NOTED: ENTIRE 2 STORY BIDG IS IS UNDER A GUT REHAB WITH A 2 STORY EXTENTION AT REAR. STOP ALL WORK! REMEDY: OBTAIN ALL NECESSARY PERMITS FOR DEMOLITION AS WELL AS CONSTRUCTION+LEGALIZE TWO STORY VERTICLE EXTENSION AT REAR OF BUILDING
#07EM05
VIOLATION WORK WITHOUT PERMIT - ACTIVE
Dec 16, 1998UNSAFE BUILDINGS

#3184/98
DOB VIOLATION
DOB NOW Safety (0)

None open.

HPD (0)

None open.

Check the agency records

Always confirm on the city's own systems before acting: DOB BIS property profile · DOB NOW · HPD Online · Pay ECB/OATH penalties (CityPay)

City records as of Oct 27, 2026, 1:54 PM ET. BBL 3008680023.

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