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ViolationScout8 certifications filed against 2 new Class C in the last 180 days.Is this your building?
Buildings305 Martense Street, BrooklynCurrent through

305 Martense St, Brooklyn

BBL 3-04868-0083

En español: 26 violaciones de Clase C abiertas (peligro inmediato) y 45 abiertas en total. La más antigua del HPD lleva 8 años abierta, desde el 31 de enero de 2018.

Certifications are being filed faster than new violations come in. 8 certifications filed against 2 new Class C in the last 180 days.

The oldest open HPD violation has been open 8 years, since January 31, 2018.

Since September 29, 2023, certifications were filed on 20 Class C violations, all 20 by the original certify-by date. HPD now marks 1 of them Invalid Certification. How certification works

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26 open Class C. The oldest open HPD violation was filed January 31, 2018.

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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: every open violation in the city's own words, what each status means, and how the building compares with others its size. Usually ready within 15 minutes of payment.

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HPD takes complaints from tenants through 311.

Alternative Enforcement Program
In HPD's Alternative Enforcement Program since January 31, 2018.
Housing court
2 open housing court cases, most of them comprehensive cases. The newest opened October 15, 2024.
Boiler inspection
Inspected July 22, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed December 8, 2025, for the year to October 31, 2025. Buildings with 3 or more apartments file one with HPD every year.
Rent stabilization
Has rent-stabilized apartments (2024 registration).
HPD emergency repair orders
3 completed HPD emergency repair orders since September 29, 2023, awarded for $4,812 in total. The most recent of the 3, a general construction order, was opened December 22, 2025.

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 C26 open most often Vermin / Infestation
Fire SafetyNot complied with18806277305 MARTENSE REALTY LLC
Invalid certification18806276305 MARTENSE REALTY LLC
Lead PaintNotice sent18685011
Lead PaintNotice sent18685010
Vermin / InfestationNotice sent to tenant18674265
Vermin / InfestationNotice sent to tenant18674264
Notice sent18522021
Notice sent18508449
Heat / Hot WaterNot complied with18339085
Notice sent18337886
The report lists all 26, each with the city's own words and the date on its notice. What the report adds
Class B19 open most often Mold
Notice sent19180506305 MARTENSE REALTY LLC
Notice sent19180505305 MARTENSE REALTY LLC
Notice sent19180503305 MARTENSE REALTY LLC
Notice sent19180483305 MARTENSE REALTY LLC
Not complied with18702064
Not complied with18702062
MoldNo access to reinspect (first try)19048135
MoldNotice sent to tenant18522015
Notice sent18372137
Notice sent18372126
The report lists all 19, each with the city's own words and the date on its notice. What the report adds

The full report on 305 Martense St, Brooklyn

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The most common category among the open records here is vermin and pests.

Vermin and pests in Brooklyn

Other buildings on this tax block

Nearby buildings

Questions about this building

Does 305 Martense Street, Brooklyn have open violations?

Yes. 305 Martense Street, Brooklyn had 45 open violations on September 27, 2026: 45 from HPD. 26 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 8 years, since January 31, 2018.

Is 305 Martense Street, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 8 certifications filed against 2 new Class C in the last 180 days. That window ends September 27, 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 305 Martense Street, Brooklyn?

Since September 29, 2023, certifications were filed on 20 Class C violations, all 20 by the original certify-by date. HPD now marks 1 of them Invalid Certification. 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.

Is 305 Martense Street, Brooklyn in HPD's Alternative Enforcement Program?

Yes. In HPD's Alternative Enforcement Program since January 31, 2018. HPD puts a group of buildings with serious, long-running violations into the program each year. While a building is in it, HPD can make repairs itself and charge the cost to the property, and the building stays in until HPD discharges it.

Is 305 Martense Street, Brooklyn in housing court?

Yes. 2 open housing court cases, most of them comprehensive cases. The newest opened October 15, 2024. HPD takes buildings to housing court to get violations fixed and heat and hot water restored, and it joins tenants' own repair cases, called tenant actions. A case stays open until the court closes it.

Are any HPD emergency repair orders at 305 Martense Street, Brooklyn marked completed?

Yes. 3 completed HPD emergency repair orders since September 29, 2023, awarded for $4,812 in total. The most recent of the 3, a general construction order, was opened December 22, 2025. 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 the boiler at 305 Martense Street, Brooklyn last inspected?

On July 22, 2026. DOB requires a boiler in a building with 6 or more apartments to be inspected once every calendar year, with the report filed within 14 days of the inspection. Low-pressure boilers in residential buildings with 5 or fewer apartments are exempt.

When did 305 Martense Street, Brooklyn last file its bedbug report?

On December 8, 2025, for the year to October 31, 2025. HPD asks the owner of every building with 3 or more apartments for this report once a year, covering November 1 to October 31, including buildings that had no bedbugs.

Is 305 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 305 Martense Street, Brooklyn built?

The city's record gives 1925 as the year 305 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 305 Martense Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 28 residential units at 305 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 HPD's Alternative Enforcement Program list, HPD's housing court cases, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders, DOB boiler inspection reports, HPD's annual bedbug reports and the city's PLUTO tax-lot file. This page is current through September 27, 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 HPD's Alternative Enforcement Program list, HPD's housing court cases, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders, DOB boiler inspection reports, HPD's annual bedbug reports 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, 305 Martense St, Brooklyn: 26 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/305-martense-street-brooklyn

How we count: /method.

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