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ViolationScout27 certifications filed against 9 new Class C in the last 180 days.Is this your building?
Buildings4109 15 Avenue, BrooklynCurrent through

4109 15th Ave, Brooklyn

BBL 3-05363-0006

En español: 28 violaciones de Clase C abiertas (peligro inmediato) y 61 abiertas en total. La más antigua del HPD lleva 9 años abierta, desde el 19 de agosto de 2017.

Certifications are being filed faster than new violations come in. 27 certifications filed against 9 new Class C in the last 180 days.

The oldest open HPD violation has been open 9 years, since August 19, 2017.

Since September 29, 2023, certifications were filed on 62 Class C violations, all 62 by the original certify-by date. HPD now marks 2 of them Invalid Certification. How certification works

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28 open Class C and an OATH hearing on January 8, 2027. The oldest open HPD violation was filed August 19, 2017.

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HPD takes complaints from tenants through 311.

OATH hearings
A hearing on a DOB summons is set for January 8, 2027.
DOB violations
3 active DOB violations, most of them for not benchmarking energy use. The newest was issued December 1, 2021.
DOB complaints
1 DOB complaint in the 12 months to September 25, 2026. It was filed April 29, 2026.
Energy benchmarking
ENERGY STAR score 58 for 2024, against a median of 67 for Multifamily Housing that year.
Local Law 97
Covered under Article 321, the path for certain affordable housing and houses of worship (DOB's list, March 1, 2026).
Boiler inspection
Inspected April 24, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed December 3, 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
2 completed HPD emergency repair orders since September 29, 2023, awarded for $915 in total. The most recent of the 2, a general construction order, was opened March 21, 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 C28 open most often Vermin / Infestation
Notice sent19191482
Certified on time19191481
Certified on time19191479
Vermin / InfestationNot complied with191454584109 REALTY ASSOCIATES
Lead PaintPostponement denied190726714109 REALTY ASSOCIATES
Vermin / InfestationNotice sent to tenant190659284109 REALTY ASSOCIATES
Notice sent190659234109 REALTY ASSOCIATES
Invalid certification187577924109 REALTY ASSOCIATES
Fire SafetyInvalid certification187577904109 REALTY ASSOCIATES
MoldNotice sent to tenant191411734109 REALTY ASSOCIATES
The report lists all 28, each with the city's own words and the date on its notice. What the report adds
Class B32 open most often Mold
Notice sent19191485
Notice sent19191484
Notice sent191454744109 REALTY ASSOCIATES
Notice sent191454644109 REALTY ASSOCIATES
MoldNotice sent to tenant191454464109 REALTY ASSOCIATES
Notice sent190659274109 REALTY ASSOCIATES
Notice sent190659264109 REALTY ASSOCIATES
Notice sent190659254109 REALTY ASSOCIATES
Vermin / InfestationNotice sent190659244109 REALTY ASSOCIATES
Notice sent190659224109 REALTY ASSOCIATES
The report lists all 32, each with the city's own words and the date on its notice. What the report adds
OATH/ECB1 open
Class 1Hearing pending39187081R4109 REALTY ASSOCIATES

The full report on 4109 15th Ave, 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 4109 15 Avenue, Brooklyn have open violations?

Yes. 4109 15 Avenue, Brooklyn had 61 open violations on September 27, 2026: 60 from HPD and 1 from OATH/ECB. 28 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 9 years, since August 19, 2017.

Is 4109 15 Avenue, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 27 certifications filed against 9 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 4109 15 Avenue, Brooklyn?

Since September 29, 2023, certifications were filed on 62 Class C violations, all 62 by the original certify-by date. HPD now marks 2 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.

Does 4109 15 Avenue, Brooklyn have an OATH hearing coming up?

Yes. A hearing on a DOB summons is set for January 8, 2027. DOB summonses are heard at OATH, the city's hearings office, and OATH can move a hearing to a later date. When nobody shows up, the summons is decided by default, the costliest way one ends.

Does 4109 15 Avenue, Brooklyn have active DOB violations?

Yes. 3 active DOB violations, most of them for not benchmarking energy use. The newest was issued December 1, 2021. 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.

Has DOB received complaints about 4109 15 Avenue, Brooklyn?

Yes. 1 DOB complaint in the 12 months to September 25, 2026. It was filed April 29, 2026. Anyone can complain to DOB about a building or the work going on in it, and DOB then inspects and decides whether there is a violation. A conversion complaint says an apartment may have been added or changed without approval. It is a complaint, not a finding.

Are any HPD emergency repair orders at 4109 15 Avenue, Brooklyn marked completed?

Yes. 2 completed HPD emergency repair orders since September 29, 2023, awarded for $915 in total. The most recent of the 2, a general construction order, was opened March 21, 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.

What is the ENERGY STAR score for 4109 15 Avenue, Brooklyn?

ENERGY STAR score 58 for 2024, against a median of 67 for Multifamily Housing that year. Buildings over 25,000 square feet report their energy use to the city every year under Local Law 84. The ENERGY STAR score runs from 1 to 100 and compares a building with similar ones nationwide; 50 is the national median. The score is the one the city publishes, and this page never estimates a Local Law 97 emissions penalty. A lot that reported several properties in one year is not scored here.

When was the boiler at 4109 15 Avenue, Brooklyn last inspected?

On April 24, 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 4109 15 Avenue, Brooklyn last file its bedbug report?

On December 3, 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 4109 15 Avenue, Brooklyn covered by Local Law 97?

Yes. It is on DOB's Local Law 97 covered buildings list. Covered under Article 321, the path for certain affordable housing and houses of worship (DOB's list, March 1, 2026). Local Law 97 sets greenhouse gas limits for most New York City buildings over 25,000 square feet, and DOB's covered buildings list says which path each building is on. The list reflects DOB's records, which owners can ask DOB to correct. This page never estimates a penalty or says whether a building complies.

Is 4109 15 Avenue, 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 4109 15 Avenue, Brooklyn built?

The city's record gives 1930 as the year 4109 15 Avenue, 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 4109 15 Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 35 residential units at 4109 15 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 OATH hearing dates, DOB violations, DOB complaints, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection reports, HPD's annual bedbug reports, DOB's Local Law 97 covered buildings list 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 OATH hearing dates, DOB violations, DOB complaints, the Rent Guidelines Board's stabilized-building lists, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection reports, HPD's annual bedbug reports, DOB's Local Law 97 covered buildings list 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, 4109 15th Ave, Brooklyn: 28 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/4109-15-avenue-brooklyn

How we count: /method.

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