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ViolationScout26 certifications filed against 10 new Class C in the last 180 days.Is this your building?
Buildings939 42 Street, BrooklynCurrent through

939 42nd St, Brooklyn

BBL 3-05590-0065

En español: 10 violaciones de Clase C abiertas (peligro inmediato) y 27 abiertas en total.

Certifications are being filed faster than new violations come in. 26 certifications filed against 10 new Class C in the last 180 days.

Since September 28, 2023, certifications were filed on 7 Class C violations: 2 by the original certify-by date, 5 after it. How certification works

Is this your building?

10 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.

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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
4 active DOB violations, most of them for low-pressure boilers. The newest was issued April 25, 2023.
HPD emergency repair order
1 completed HPD emergency repair order since September 28, 2023: a general construction order, opened January 10, 2026, awarded for $2,768.

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 C10 open
Vermin / InfestationNo access to reinspect (first try)19133324Dave Friedman 3 LLC
Vermin / InfestationNo access to reinspect (first try)19133323Dave Friedman 3 LLC
Lead PaintDefect letter sent18996942Dave Friedman 3 LLC
Lead PaintDefect letter sent18996941Dave Friedman 3 LLC
Lead PaintDefect letter sent18996940Dave Friedman 3 LLC
Lead PaintNotice sent18996939Dave Friedman 3 LLC
Certified late18996862Dave Friedman 3 LLC
Vermin / InfestationCertified late18991437Dave Friedman 3 LLC
MoldCertified late18991435Dave Friedman 3 LLC
Vermin / InfestationCertified late18991434Dave Friedman 3 LLC
Class B17 open
Certified on time19133331Dave Friedman 3 LLC
Certified on time19133329Dave Friedman 3 LLC
Certified on time19133328Dave Friedman 3 LLC
Certified on time19133326Dave Friedman 3 LLC
Certified on time19133325Dave Friedman 3 LLC
False certification18991432Dave Friedman 3 LLC
Notice sent18394628
Notice sent18394627
Notice sent18394626
Notice sent18394625
Notice sent18394624
Notice sent18394623
Notice sent18394622
Notice sent18394301
Notice sent18394299
Notice sent18394297
Notice sent18394296

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Questions about this building

Does 939 42 Street, Brooklyn have open violations?

Yes. 939 42 Street, Brooklyn had 27 open violations on September 26, 2026: 27 from HPD. 10 are Class C, the class HPD treats as immediately hazardous.

Is 939 42 Street, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 26 certifications filed against 10 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 939 42 Street, Brooklyn?

Since September 28, 2023, certifications were filed on 7 Class C violations: 2 by the original certify-by date, 5 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 939 42 Street, Brooklyn have active DOB violations?

Yes. 4 active DOB violations, most of them for low-pressure boilers. The newest was issued April 25, 2023. 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 939 42 Street, Brooklyn marked completed?

Yes. 1 completed HPD emergency repair order since September 28, 2023: a general construction order, opened January 10, 2026, awarded for $2,768. 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.

When was 939 42 Street, Brooklyn built?

The city's record gives 1930 as the year 939 42 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 3 floors.

How many apartments does 939 42 Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 6 residential units at 939 42 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, 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, 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, 939 42nd St, Brooklyn: 10 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/939-42-street-brooklyn

How we count: /method.

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