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ViolationScout37 certifications filed against 11 new Class C in the last 180 days.Is this your building?
Buildings370 East 31 Street, BrooklynCurrent through

370 East 31st St, Brooklyn

BBL 3-04947-0035

En español: 18 violaciones de Clase C abiertas (peligro inmediato) y 34 abiertas en total.

Certifications are being filed faster than new violations come in. 37 certifications filed against 11 new Class C in the last 180 days.

Since September 28, 2023, certifications were filed on 26 Class C violations: 24 by the original certify-by date, 2 after it. How certification works

Is this your building?

18 open Class C.

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.

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.

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.

Request a sample file

The building report reads this record for you: which violations matter, and how long this kind usually takes to clear. It is not on sale yet.

See what the report covers

HPD takes complaints from tenants through 311.

DOB violations
1 active DOB violation, issued August 16, 1993.
Rent stabilization
Has rent-stabilized apartments (2024 registration).
HPD emergency repair order
1 completed HPD emergency repair order since September 28, 2023: a general construction order, opened August 14, 2025, awarded for $1,050.

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

FiledCategoryStatusNumberRegistered party when filed
Class C18 open most often Vermin / Infestation
Vermin / InfestationNotice sent to tenant19230958
Vermin / InfestationNotice sent to tenant19230957
Fire SafetyNotice sent19230950
CIV14 mailed19100108FORTRESS 31 LLC
CIV14 mailed19100107FORTRESS 31 LLC
CIV14 mailed19100106FORTRESS 31 LLC
CIV14 mailed19100105FORTRESS 31 LLC
MoldNotice sent to tenant19015939FORTRESS 31 LLC
CIV14 mailed19015938FORTRESS 31 LLC
Vermin / InfestationNo access to reinspect (first try)19015932FORTRESS 31 LLC
Vermin / InfestationNo access to reinspect (first try)19015931FORTRESS 31 LLC
MoldNotice sent to tenant18981495FORTRESS 31 LLC
Not complied with18727778FORTRESS 31 LLC
Fire SafetyNot complied with18727774FORTRESS 31 LLC
Vermin / InfestationNot complied with18334742FORTRESS 31 LLC
Vermin / InfestationNot complied with18334741FORTRESS 31 LLC
Fire SafetyNot complied with18334740FORTRESS 31 LLC
Fire SafetyNot complied with18211519FORTRESS 31 LLC
Class B16 open most often Fire Safety
Notice sent19230959
Notice sent19230956
Notice sent19230955
Notice sent19230953
Notice sent19230952
Notice sent19230951
Notice sent19230949
CIV14 mailed19015935FORTRESS 31 LLC
Fire SafetyCIV14 mailed19015934FORTRESS 31 LLC
Fire SafetyCIV14 mailed19015933FORTRESS 31 LLC
CIV14 mailed18975007FORTRESS 31 LLC
Not complied with18727779FORTRESS 31 LLC
Not complied with18727777FORTRESS 31 LLC
Fire SafetyNot complied with18727776FORTRESS 31 LLC
Fire SafetyNot complied with18727775FORTRESS 31 LLC
MoldNo access to reinspect (first try)17852995

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Questions about this building

Does 370 East 31 Street, Brooklyn have open violations?

Yes. 370 East 31 Street, Brooklyn had 34 open violations on September 26, 2026: 34 from HPD. 18 are Class C, the class HPD treats as immediately hazardous.

Is 370 East 31 Street, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 37 certifications filed against 11 new Class C in the last 180 days. That window ends September 26, 2026. It compares certifications filed with new Class C violations, and it describes what happened, not what anyone intends.

When were certifications filed on Class C violations at 370 East 31 Street, Brooklyn?

Since September 28, 2023, certifications were filed on 26 Class C violations: 24 by the original certify-by date, 2 after it. A certification is the filing, dated when it was made, not HPD's acceptance of it. It is compared with the original certify-by date on the notice. A granted postponement moves that date and the city's data keeps only the first, so a certification counted after it may still have met a postponed date.

Does 370 East 31 Street, 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.

Are any HPD emergency repair orders at 370 East 31 Street, Brooklyn marked completed?

Yes. 1 completed HPD emergency repair order since September 28, 2023: a general construction order, opened August 14, 2025, awarded for $1,050. HPD orders an emergency repair when a hazardous condition cited in a violation, or in another agency's emergency order, is not corrected, and does the work itself or through a contractor. The amounts are what the orders were awarded for, not a bill: this page does not show what was charged to the property or whether it was paid. Orders for lab tests, such as dust-wipe and asbestos samples, are not counted.

Is 370 East 31 Street, Brooklyn rent stabilized?

The building has rent-stabilized apartments on its 2024 registration. That comes from the Rent Guidelines Board's list of buildings with at least one stabilized apartment registered that year. Buildings that registered late are left off, and a 421-a or J-51 building can leave stabilization when its tax benefit ends. A particular apartment's status is for NYS HCR to say.

When was 370 East 31 Street, Brooklyn built?

The city's record gives 1931 as the year 370 East 31 Street, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as a walk-up apartment building with 4 floors.

How many apartments does 370 East 31 Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 36 residential units at 370 East 31 Street, 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 DOB violations, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders and the city's PLUTO tax-lot file. This page is current through September 26, 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 DOB violations, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders and the city's PLUTO tax-lot file. 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, 370 East 31st St, Brooklyn: 18 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/370-east-31-street-brooklyn

How we count: /method.

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