Skip to content
ViolationScoutYour building
Buildings820 Classon Avenue, BrooklynCurrent through

820 Classon Ave, Brooklyn

BBL 3-01177-0033

Built
1920
Floors
6
Residential units
8
Building type
Walk-up building
Lot area
2,500 sq ft
Floor area
9,915 sq ft
Last sale
$6,000,000

En español: contando todos los años, el HPD tiene 9 violaciones abiertas aquí, la más antigua del 7 de abril de 2021.

Is this your building?

We read every request ourselves. When a compliance firm we work with can take the building, we introduce you to that one firm. One firm, not a list. We reply within one business day.

Your details stay with us, and go only to the one firm you are introduced to. No lists, no resale.

¿Es su edificio? Déjenos un correo o un teléfono. Leemos cada solicitud.

See everything first: the building report, $19

Or file it yourself: what it can hold up, and how correction is filed

The case file on a building like this names who is responsible on HPD's registration and how to reach them. We prepare them for firms on our pilot, ranked by how much hazardous work is open.

Get leads for your boroughs

The building report reads this record for you: how the building compares with others its size. Usually ready within 15 minutes of payment.

Get the report, $19

HPD takes complaints from tenants through 311.

For a letter to your landlord or a housing court case, the report lists every open violation here, each in the city's own words with the date on its notice. Get the report, $19

OATH/ECB summonses
12 DOB summonses here since January 1, 2019, with $10,975 in penalties imposed. 9 judgments docketed, the latest on December 31, 2023. A docketed judgment shows up in a title search.
  • November 10, 2022, DOB: Temporary construction equipment on site-expired permit. In violation, $625 penalty imposed.
  • February 16, 2022, DOB: Temporary construction equipment on site-expired permit. In violation, $625 penalty imposed.
  • February 16, 2022, DOB: Pedestrian protection does not meet code specifications. In violation, $2,400 penalty imposed.

The newest 3 of 12 summonses OATH lists here. The report lists all 12, with each outcome, the penalty imposed and any docketing date. What the report adds

DOB violations
1 active DOB violation, issued August 16, 1993.
DOB permits
DOB NOW lists 4 work permits here, the newest issued December 28, 2023, for Construction Fence work.
  • Construction Fence, issued December 28, 2023, signed off.
  • Sidewalk Shed, issued March 17, 2021, signed off.
  • Supported Scaffold, issued September 22, 2020, signed off.

The newest 3 of 4 permits DOB NOW lists here. The report lists all 4, with job numbers and each job's estimated cost. What the report adds

Certificate of occupancy
Final, issued November 5, 2025.

Counting every year, HPD has 9 violations still open here, the oldest filed on April 7, 2021. No Class B or C violation HPD filed here in the last 3 years is still open. No OATH/ECB summons issued in the last 3 years is still active.

The full report on 820 Classon Ave, Brooklyn

Get the report on 820 Classon Ave, Brooklyn, $19 See a sample report

Usually ready within 15 minutes of payment, on your order page and by email. If it tells you nothing you did not already know, reply and we refund it.

Other buildings on this tax block

Nearby buildings

Questions about this building

Does 820 Classon Avenue, Brooklyn have open violations?

Yes. On October 10, 2026, counting every year, HPD had 9 violations still open at 820 Classon Avenue, Brooklyn, the oldest filed on April 7, 2021. None was a Class B or C violation filed in the last 3 years, and no OATH/ECB summons issued in the last 3 years was still active.

Does 820 Classon Avenue, Brooklyn have active DOB violations?

Yes. 1 active DOB violation, issued August 16, 1993. The Department of Buildings writes these separately from HPD's housing violations, for things like boilers, elevators, facades, construction and energy filings. Each one stays active until DOB resolves or dismisses it.

Does 820 Classon Avenue, Brooklyn have a certificate of occupancy?

Its latest certificate of occupancy is a final one, issued November 5, 2025. A certificate of occupancy says how a building may be used and occupied. A temporary one lets people move in while work finishes and has to be renewed until DOB issues the final one. DOB's records here start in July 2012, so an older certificate may not show.

When was 820 Classon Avenue, Brooklyn built?

The city's record gives 1920 as the year 820 Classon Avenue, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as a walk-up building with 6 floors.

How many apartments does 820 Classon Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 8 residential units at 820 Classon Avenue, Brooklyn. The count is for the whole tax lot.

Where do these numbers come from?

From New York City's own data: HPD housing violations and OATH/ECB hearing results, read whole rather than sampled. It also draws on OATH/ECB summonses from DOB and FDNY, DOB violations, DOB NOW work permits, DOB certificates of occupancy, the city's PLUTO tax-lot file and DOF's property sales records. This page is current through October 10, 2026. The city's data changes daily, so a violation certified after that can still show as open here; the city's own page for this building is linked above.

Sources. HPD housing violations and OATH/ECB hearing results, plus OATH/ECB summonses from DOB and FDNY, DOB violations, DOB NOW work permits, DOB certificates of occupancy, the city's PLUTO tax-lot file and DOF's property sales records. Counts cover HPD Class B and C violations from the last 3 years that HPD still shows open, and OATH/ECB summonses from the same 3 years that the city still shows active. The city's own pages can show more, never fewer.

Cite this page

ViolationScout, 820 Classon Ave, Brooklyn: 8 units, 9 open HPD violations, from New York City's HPD violation and OATH/ECB hearing data. Figures through October 10, 2026. https://violationscout.com/building/820-classon-avenue-brooklyn

How we count: /method.

Is this your building?