Does 3924 9 Avenue, Brooklyn have open violations?

Yes. On October 10, 2026, counting every year, HPD had 3 violations still open at 3924 9 Avenue, Brooklyn, the oldest filed on June 5, 2025. 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.

When was 3924 9 Avenue, Brooklyn built?

The city's record gives 1931 as the year 3924 9 Avenue, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as a residence with stores or offices with 2 floors.

How many apartments does 3924 9 Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 3 residential units at 3924 9 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 NOW work permits, 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.

3924 9th Ave, Brooklyn

BBL 3-00916-0043

Built: 1931
Floors: 2
Residential units: 3
Building type: Residence with stores or offices
Zoning district: R6
Lot area: 1,600 sq ft
Floor area: 2,400 sq ft
Last transfer: No price recordedJuly 30, 2018
Last sale: $2,000,000May 17, 2018

En español: contando todos los años, el HPD tiene 3 violaciones abiertas aquí, la más antigua del 5 de junio de 2025.

Is this your building?

I own or manage itAsk for one introduction

I live hereWhere to report a condition

I'm buying itGet the report, $19

I clear violationsGet leads for your boroughs

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.

Email or phoneWhat do you need? (optional)I ask to be introduced to one compliance firm about this building. I can withdraw at any time by emailing hello@violationscout.com.

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: 3 DOB summonses here since January 1, 2019, with $6,250 in penalties imposed. 3 judgments docketed, the latest on June 30, 2024. A docketed judgment shows up in a title search.
August 3, 2023, DOB: Work without a permit. In violation, $2,500 penalty imposed.
August 3, 2023, DOB: Failure to maintain building in code-compliant manner. In violation, $1,250 penalty imposed.
August 3, 2023, DOB: Occupancy contrary to that allowed by certificate of occupancy or building department records. In violation, $2,500 penalty imposed.
DOB permits: DOB NOW lists 1 work permit here: General Construction, issued August 23, 2023, signed off.

Counting every year, HPD has 3 violations still open here, the oldest filed on June 5, 2025. 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 3924 9th Ave, Brooklyn

How it compares with the 223,260 Brooklyn buildings with 1 to 5 apartments.
All 1 DOB NOW work permit, with job numbers and each job's estimated cost.
All 3 DOB summonses at OATH/ECB, with each outcome, the penalty imposed and any docketing date.
Every other record on this page, on a cover you can forward.

Get the report on 3924 9th 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.