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Brooklyn · Block 1896 · Lot 15 · 11205

173 Classon Avenue

3 floors · 6 apartments · 4,350 sq ft · built 1905 · class C2 · owner of record: 173 Classon Llc

0open violations
$23,300ECB/OATH penalties owed
0HPD class C (immediately hazardous)
Overdueto 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 Applies
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

OverdueRegistration expired 2026-09-01
Annual parapet observation Check
Local Law 126 · By December 31 each year
What this is

If the building has a parapet facing a street, sidewalk or other public way, a competent person (such as a mason, engineer or architect) must observe it every year and the owner keeps the report for DOB on request. Detached one- and two-family homes are exempt. Agency page

Dec 31, 2026
in 69 days		Keep the report on file (not filed with DOB)
Bedbug annual filing Applies
Local Law 69 · December 1 to 31 each year
What this is

Owners of multiple dwellings file their bedbug infestation history for the prior year with HPD and post or distribute it to tenants. Agency page

Dec 31, 2026
in 69 days		Annual
Annual notice: window guards and lead paint Applies
HPD / Health Code · January 1 to 16 each year
What this is

Deliver the annual notice to every unit asking whether a child lives there (window guards for children 10 and under; lead paint for children under 6 in pre-1960 buildings), then follow up on units that don't return it by mid-February. Agency page

Jan 16, 2027
in 85 days		Annual
Gas piping inspection (2028 cycle) Likely applies
Local Law 152 · During 2028
What this is

Buildings with gas piping (except one- and two-family homes) need a periodic gas piping inspection by a licensed master plumber every four years. Community district 3 is on the 2028 cycle; certification is filed with DOB after the inspection. Buildings with no gas piping file a certification instead. Agency page

Dec 31, 2028
in 800 days		Next cycle year 2028

Open violations

ECB / OATH (17) · $23,300 owed
IssuedViolationHearingBalance
Feb 28, 2019Construction CLASS - 1
FAILURE TO COMPLY WITH THE COMMISSIONERS ORDER CONTAINED IN SUMMONS/VIOLATION #35297156Y ISSUED ON 11/16/17 AND TO FILE A CERTIFICATE OF CORREECTION PURSUANT TO 28-201.1 AND 1RCNY 102-01.WORK WITHOUT A PERMIT
#35394984Y		Oct 7, 2019
IN VIOLATION		$625
Jan 9, 2019Construction CLASS - 2
FAILURE TO COMPLY WITH THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIOLATION #35297155M ISSUED 11/16/17 AND TO FILE A CERTIFICATE OF CORRECTION PURSUANT TO 28-201.1 AND 1RCNY 102-01. NOTE: NO DOCUMENT FILE FO
#35396190L		Apr 15, 2019
IN VIOLATION		$625
Jan 3, 2019Construction CLASS - 1
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297156Y ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. WORK W/O A PERMIT. REMEDY: COMPLY W/COMM'S ORDER &/OR FILE A C
#35393561H		Apr 8, 2019
IN VIOLATION		$1,250
Nov 10, 2018Construction CLASS - 2
FAILURE TO COMPLY W/ THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIOLATION#35297155M ISSUED ON 11/16/17 AND TO FILE A CERTIFICATE OF CORRECTION PURSUANT TO 28-201.1 AND 1RCNY 102-01. NOTE:NO DOCUMENT FILE TO
#35395862K		Feb 11, 2019
IN VIOLATION		$1,250
Sep 17, 2018Construction CLASS - 1
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297156Y ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. FOR: WORK W/O A PERMIT. REMEDY: COMPLY W/COMM'S ORDER &/OR FILE
#35389302L		Mar 4, 2019
IN VIOLATION		$3,125
Sep 17, 2018Construction CLASS - 2
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297155M ISSUED ON 11-16-17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. FOR: WORK DOES NOT CONFORM TO APPROVE CONSTRUCTION DOCUMENTS &/
#35389303N		Mar 4, 2019
IN VIOLATION		$3,125
Aug 7, 2018Construction CLASS - 1
FAILURE TO COMPLY W/ THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIO# 35297156Y ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1& 1RCNY 102-01. WORK W/OUT A PERMIT, NOTED @ REAR OF BLDG EXP#3 THEY H
#35340947L		Jan 7, 2019
IN VIOLATION		$1,250
Aug 7, 2018Construction CLASS - 2
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297155M ISSUED ON 11-16-17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. FOR: WORKS DOES NOT CONFORM TO APPROVED CONSTRUCTION PLANS AT
#35387385R		Jan 7, 2019
IN VIOLATION		$1,250
Jun 25, 2018Construction CLASS - 1
FAILURE TO COMPLY WITH THE COMMISSIONERS ORDER CONTAINED IN SUMMONS/VIOLATION #35297156Y ISSUED ON 11/16/17 AND TO FILE A CERTIFICATE OF CORRECTION PURSUANT TO 28-201.1 AND 1RCNY 102-01.NOTE:NO DOCUMENT FILE FO
#35339264Y		Jan 9, 2019
IN VIOLATION		$1,250
Jun 25, 2018Construction CLASS - 2
FAILURE TO COMPLY WITH THE COMMISSIONERS ORDER CONTAINED IN SUMMONS/VIOLATION #35297155M ISSUED ON 11/16/17 AND TO FILE A CERTIFICATE OF CORRECTION PURSUANT TO 28-201.1 AND 1RCNY 102-01.NOTE:DOCUMENT FILE CERTI
#35339263M		Jan 9, 2019
IN VIOLATION		$1,250
May 15, 2018Construction CLASS - 1
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297156Y ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. WORK W/O A PERMIT AT REAR OF BLDG EXP#3 THEY HAVE EXTENDED FIRE
#35338460R		Dec 17, 2018
IN VIOLATION		$2,500
May 15, 2018Construction CLASS - 2
FAILURE TO COMPLY W/THE COMM'S ORDER CONTAINED IN SUMMONS/VIO#35297155M ISSUED ON 11-16-17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. WORK DOES NOT CONFORM TO APPROVED CONSTRUCTION DOCUMENT TS & OR
#35338461Z		Dec 19, 2018
IN VIOLATION		$1,250
Mar 31, 2018Construction CLASS - 1
FAILURE TO COMPLY WITH THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIOLATION #35297156Y ISSUED ON 11/16/17 & TO FILE A CERTIFICATE OF CORRECTION PURSUANT TO 28-201.1 & 1RCNY 102-01.WORK WITHOUT PERMIT @ EXPOS
#35326335J		Jan 7, 2019
IN VIOLATION		$1,250
Dec 27, 2017Construction CLASS - 2
FAILURE TO COMPLY W/ THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIOLATION# 35297155M ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. FOR DOING WORK THAT DOES NOT CONFIRM TO CONSTRU
#35282429Z		Jul 18, 2018
IN VIOLATION		$800
Dec 27, 2017Construction CLASS - 2
FAILURE TO COMPLY W/ THE COMMISSIONER'S ORDER CONTAINED IN SUMMONS/VIOLATION# 35297154K ISSUED ON 11/16/17 & TO FILE A C OF C PURSUANT TO 28-201.1 & 1RCNY 102-01. FOR ILLEGAL USE OF THE MEZZ AREA. REM: COMPLY W
#35282428R		Jul 23, 2018
IN VIOLATION		$800
Nov 17, 2017Construction CLASS - 2
FAILURE TO MAINTAIN BLDG IN CODE COMPLIANT MANNER. NOTED: AT 3RD FL LEVEL,PUBLIC HALL STAIRS DEFECTIVE. LOOSE WOOD STAIRS NOSING DETACHING FROM WOOD STAIRS TREAD AT 1ST TREAD FROM TOP 3RD FL TO BOTTOM.
#35294331Z		Aug 6, 2018
IN VIOLATION		$500
Nov 16, 2017Construction CLASS - 1
OCCUPANCY CONTRARY TO THAT ALLOWED BY THE C OF O OR BLDG DEPT RECORDS.JOB#340480517 STATES MEZZ AREA TO BE USE ACCESSORY USE OMLY NO SLEEPING. AT TIME OF INSPECTION MEZZ AREA IS BEEN USE AS A BEDROOM.
#35297154K		Jul 30, 2018
IN VIOLATION		$1,200
DOB (0)

None open.

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 23, 2026, 9:27 PM ET. BBL 3018960015.

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