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ViolationScout12 open Class C, with 8 certifications filed and 0 new Class C in the last 180 days, too few to call a direction.Is this your building?
Buildings307 Martense Street, BrooklynCurrent through

307 Martense St, Brooklyn

BBL 3-04868-0079

En español: 12 violaciones de Clase C abiertas (peligro inmediato) y 32 abiertas en total.

Open violations are sitting, with little movement either way. 12 open Class C, with 8 certifications filed and 0 new Class C in the last 180 days, too few to call a direction.

Since September 28, 2023, certifications were filed on 8 Class C violations, all 8 by the original certify-by date. How certification works

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12 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
1 active DOB violation, issued August 16, 1993.
Rent stabilization
Has rent-stabilized apartments (2024 registration).

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 C12 open most often Vermin / Infestation
Vermin / InfestationNotice sent to tenant18714765Ditmas Park 307, LLC
Vermin / InfestationNotice sent to tenant18177203Ditmas Park 307, LLC
Vermin / InfestationNotice sent to tenant18177202Ditmas Park 307, LLC
Lead PaintNotice sent18092292
Lead PaintNotice sent18092291
Lead PaintNotice sent18092290
Vermin / InfestationNotice sent to tenant17174842
Lead PaintNotice sent17112587
Lead PaintNotice sent17112586
Vermin / InfestationNotice sent to tenant16981625
Vermin / InfestationNotice sent to tenant16981624
Vermin / InfestationNotice sent to tenant16656578
Class B20 open most often Lead Paint
Notice sent18714766Ditmas Park 307, LLC
Notice sent18235748Ditmas Park 307, LLC
Notice sent18177208Ditmas Park 307, LLC
Notice sent18177207Ditmas Park 307, LLC
Notice sent18177206Ditmas Park 307, LLC
Notice sent18177201Ditmas Park 307, LLC
Notice sent18177199Ditmas Park 307, LLC
Notice sent18088016
Notice sent18088006
Not complied with17796964
MoldDefect letter sent17796957
MoldDefect letter sent17796955
MoldDefect letter sent17796954
Lead PaintNotice sent17123847
Lead PaintNotice sent17123846
Lead PaintNotice sent17123845
Lead PaintNotice sent17123844
Lead PaintNotice sent17123843
Notice sent16981626
Notice sent16981623

The most common category among the open records here is lead paint.

Lead paint in Brooklyn

Other buildings on this tax block

Nearby buildings

Questions about this building

Does 307 Martense Street, Brooklyn have open violations?

Yes. 307 Martense Street, Brooklyn had 32 open violations on September 26, 2026: 32 from HPD. 12 are Class C, the class HPD treats as immediately hazardous.

Is 307 Martense Street, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 12 open Class C, with 8 certifications filed and 0 new Class C in the last 180 days, too few to call a direction. 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 307 Martense Street, Brooklyn?

Since September 28, 2023, certifications were filed on 8 Class C violations, all 8 by the original certify-by date. 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 307 Martense 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.

Is 307 Martense 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 307 Martense Street, Brooklyn built?

The city's record gives 1922 as the year 307 Martense 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 307 Martense Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 27 residential units at 307 Martense 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 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 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, 307 Martense St, Brooklyn: 12 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/307-martense-street-brooklyn

How we count: /method.

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