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Brooklyn · Block 1806 · Lot 1 · 11221

433 Throop Avenue

3 floors · 2 apartments · 2,200 sq ft · built 1931 · class S2 · owner of record: 433 Throop Avenue Llc

33open violations
$125,000ECB/OATH penalties owed
0HPD class C (immediately hazardous)
788dto Gas piping inspection (2028 cycle)

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

Compliance deadlines

RequirementDueStatus
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 57 days		Keep the report on file (not filed with DOB)
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 301 days		Required only if the owner doesn't live there
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 788 days		Next cycle year 2028

Open violations

ECB / OATH (5) · $125,000 owed
IssuedViolationHearingBalance
Nov 12, 2025Construction CLASS - 1
FAILURE TO MAINTAIN BUILDING IN A CODE-COMPLIANT MANNER. AT TIME OF INSPECTION, CELLAR LEVEL WAS BEING OCCUPIED AS A CLASS B APARTMENT WITH NO SECOND MEANS OF EGRESS., REPAIR AND/REPLACE
#39166760X		Jan 21, 2026
DEFAULT		$25,000
Nov 12, 2025Construction CLASS - 1
WORK WITHOUT A PERMIT. AT CELLAR LEVEL, OBSERVED NEW LIGHTS FIXTURES AND NEW OUTLETS ON PARTITIONS WALL THAT IS NOT FILED ON THE DOB SYSTEM., OBTAIN PERMIT
#39166756N		Jan 21, 2026
DEFAULT		$25,000
Nov 12, 2025Construction CLASS - 1
WORK WITHOUT A PERMIT. AT CELLAR LEVEL, OBSERVED NEW PARTITION WALLS FOR 2 BEDROOMS AND BATHROOM WITH NO PERMITS FILED ON THE DOB SYSTEMS., OBTAIN PERMIT
#39166759Z		Jan 21, 2026
DEFAULT		$25,000
Nov 12, 2025Construction CLASS - 1
WORK WITHOUT A PERMIT. AT CELLAR LEVEL, OBSERVED 3-PIECE BATHROOM NOT FILED ON THE DOB SYSTEM., OBTAIN PERMIT
#39166757P		Jan 21, 2026
DEFAULT		$25,000
Nov 12, 2025Construction CLASS - 1
OCCUPANCY CONTRARY TO CERTIFICATE OF OCCUPANCY. CERTIFICATE OF OCCUPANCY FILING STATES THAT PREMISES IS A 3 STORY, MIX-USE BUILDING. UPON INSPECTION, CELLAR LEVEL WAS BEING OCCUPIED AS A CLASS B APARTMENT., DIS
#39166758R		Jan 21, 2026
DEFAULT		$25,000
DOB (12)
IssuedViolationStatus
Nov 14, 2025LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION
#10073		DOB VIOLATION - ACTIVE
Sep 23, 2024LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2023 EXTERNAL LOW PRESSURE INSPECTION
#09001		DOB VIOLATION - ACTIVE
Jun 30, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTION
#15809		DOB VIOLATION - ACTIVE
Jun 30, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION
#35980		DOB VIOLATION - ACTIVE
Jun 20, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION
#16699		DOB VIOLATION - ACTIVE
Jun 20, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTION
#37182		DOB VIOLATION - ACTIVE
Apr 25, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2022 EXTERNAL LOW PRESSURE INSPECTION
#13315		DOB VIOLATION - ACTIVE
Nov 8, 2019LOW PRESSURE BOILER
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2017 INSPECTION REPORT
#08167		DOB VIOLATION - ACTIVE
Apr 6, 2018LOW PRESSURE BOILER
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2016 INSPECTION REPORT
#10239		DOB VIOLATION - ACTIVE
Feb 24, 2017LOW PRESSURE BOILER
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2015 INSPECTION REPORT
#08068		DOB VIOLATION - ACTIVE
Jan 1, 2009LOCAL LAW 62/91 - BOILERS

#14051		DOB VIOLATION - ACTIVE
Aug 16, 1993LOCAL LAW 62/91 - BOILERS

#26928		DOB VIOLATION - ACTIVE
DOB NOW Safety (16)
IssuedViolationStatus
Mar 17, 2026AEUHAZ FTC-AEU-HAZ
Active
Mar 17, 2026AEUHAZ FTC-AEU-HAZ
Active
Mar 17, 2026AEUHAZ FTC-AEU-HAZ
Active
Mar 17, 2026AEUHAZ FTC-AEU-HAZ
Active
Mar 17, 2026AEUHAZ FTC-AEU-HAZ
Active
Nov 14, 2025Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION		Active
Sep 23, 2024Boiler LBLVIO
Violation Issued-Failure To File 2023 External Low Pressure Inspection Report		Active
Jun 30, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION		Active
Jun 30, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTION		Active
Jun 20, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION		Active
Jun 20, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTION		Active
Apr 25, 2023Boiler LBLVIO
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2022 INSPECTION REPORT		Active
Nov 8, 2019Boiler LBLVIO
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2017 INSPECTION REPORT		Active
Apr 6, 2018Boiler LBLVIO
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2016 INSPECTION REPORT		Active
Feb 24, 2017Boiler LBLVIO
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2015 INSPECTION REPORT		Active
Jan 1, 2009Boiler LL6291
Active
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 Nov 4, 2026, 5:32 PM ET. BBL 3018060001.

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