Does 397 Nostrand Avenue, Brooklyn have open violations?

Yes. 397 Nostrand Avenue, Brooklyn had 24 open violations on October 10, 2026: 24 from HPD. 15 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 39 years, since April 3, 1987.

Is 397 Nostrand Avenue, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 15 open Class C, with nothing filed or new in the last 180 days. That window ends October 10, 2026. It compares certifications filed with new Class C violations, and it describes what happened, not what anyone intends.

When was 397 Nostrand Avenue, Brooklyn built?

The city's record gives 1931 as the year 397 Nostrand 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 4 floors.

How many apartments does 397 Nostrand Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 4 residential units at 397 Nostrand 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 DOF's tax lien sale lists and the city's PLUTO tax-lot file. 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.

397 Nostrand Ave, Brooklyn

BBL 3-01823-0002

Built: 1931
Floors: 4
Residential units: 4
Building type: Walk-up building
Zoning district: R6A
Lot area: 1,560 sq ft
Floor area: 4,400 sq ft

En español: 15 violaciones de Clase C abiertas (peligro inmediato) y 24 abiertas en total. La más antigua del HPD lleva 39 años abierta, desde el 3 de abril de 1987.

Open now, most hazardous first

15
Class C, immediately hazardous. Most often Heat / Hot Water.
20 open counting every year, the oldest since July 23, 2020
Get these certified
9
Class B, hazardous. Most often Fire Safety.
See the 9

Open violations are sitting, with little movement either way. 15 open Class C, with nothing filed or new in the last 180 days.

The original certify-by dates on the 24 open HPD violations have all passed. The latest was November 18, 2025. The report prints the date beside each one.

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15 open Class C. The oldest open HPD violation was filed April 3, 1987.

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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

Open Class C, week by week: 15 on September 24, 2026 and 15 on October 8.
DOF tax lien sale: Listed for DOF's 2025 tax lien sale, for water and sewer charges only. The last list it appeared on was the 90-day notice of February 2025.

Open violations by class. A party is named only where the building's HPD registration covers the date a violation was filed.

Filed	Category	Status	Number
Class C	15 open most often Heat / Hot Water
May 30, 2025		Notice sent	17926308
May 30, 2025	Fire Safety	Notice sent	17926307
May 30, 2025	Fire Safety	Notice sent	17926306
May 30, 2025	Fire Safety	Notice sent	17926305
May 30, 2025		Notice sent	17926301
May 30, 2025	Heat / Hot Water	Notice sent	17926298
May 30, 2025		Notice sent	17926295
May 30, 2025	Vermin / Infestation	Notice sent to tenant	17926293
May 30, 2025	Vermin / Infestation	Notice sent to tenant	17926292
May 30, 2025	Heat / Hot Water	Notice sent	17926289
The report lists all 15, each with the city's own words and the date on its notice. What the report adds
Class B	9 open most often Fire Safety
May 30, 2025	Mold	No access to reinspect (first try)	18268064
May 30, 2025		Notice sent	17926303
May 30, 2025		Notice sent	17926302
May 30, 2025		Notice sent	17926300
May 30, 2025		Notice sent	17926299
May 30, 2025		Notice sent	17926296
May 30, 2025		Notice sent	17926294
May 30, 2025	Fire Safety	Notice sent	17926291
May 30, 2025	Fire Safety	Notice sent	17926290

The full report on 397 Nostrand Ave, Brooklyn

All 24 open violations, each with the city's own words and the date on its notice.
What each of the 3 city statuses here means, and how many of these carry it.
How it compares with the 223,260 Brooklyn buildings with 1 to 5 apartments.
Every other record on this page, on a cover you can forward.

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