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ViolationScout35 certifications filed and 20 new Class C in the last 180 days, neither far ahead.Is this your building?
Buildings523 Blake Avenue, BrooklynCurrent through

523 Blake Ave, Brooklyn

BBL 3-03766-0049

En español: 26 violaciones de Clase C abiertas (peligro inmediato) y 44 abiertas en total. La más antigua del HPD lleva 15 años abierta, desde el 15 de octubre de 2010.

Certifications are being filed about as fast as new violations come in. 35 certifications filed and 20 new Class C in the last 180 days, neither far ahead.

The oldest open HPD violation has been open 15 years, since October 15, 2010.

Since September 29, 2023, certifications were filed on 26 Class C violations, all 26 by the original certify-by date. HPD now marks 13 of them Invalid Certification. How certification works

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26 open Class C. The oldest open HPD violation was filed October 15, 2010.

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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.

DOB violations
10 active DOB violations. The newest was issued January 6, 2022.
Housing court
1 open housing court case, opened November 30, 2022.
Boiler inspection
2 boilers, both inspected in 2026, the latest on June 2. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed December 2, 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 $690 in total. The most recent of the 2, a general construction order, was opened March 18, 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 Heat / Hot Water
Heat / Hot WaterCertified on time19233328
Heat / Hot WaterCertified on time19233327
Heat / Hot WaterInvalid certification19233326
Heat / Hot WaterCertified on time19225862
Heat / Hot WaterInvalid certification19225861
Heat / Hot WaterCertified on time19225860
Heat / Hot WaterInvalid certification19225859
Vermin / InfestationCIV14 mailed19220161
Vermin / InfestationCIV14 mailed19220160
Heat / Hot WaterInvalid certification19057380HT JERICHO LP
The report lists all 26, each with the city's own words and the date on its notice. What the report adds
Class B18 open most often Mold
Certified on time19125660HT JERICHO LP
Certified on time19125656HT JERICHO LP
Not complied with18995208HT JERICHO LP
Not complied with18995207HT JERICHO LP
Not complied with18995205HT JERICHO LP
Invalid certification18935431HT JERICHO LP
Notice sent17609270
Notice sent17609267
Notice sent17609266
Notice sent17609265
The report lists all 18, each with the city's own words and the date on its notice. What the report adds

The full report on 523 Blake Ave, Brooklyn

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Usually ready within 15 minutes of payment, on your order page and by email. If it tells you nothing you did not already know, reply and we refund it.

The most common category among the open records here is heat and hot water.

Heat and hot water in Brooklyn

Nearby buildings

Questions about this building

Does 523 Blake Avenue, Brooklyn have open violations?

Yes. 523 Blake Avenue, Brooklyn had 44 open violations on September 27, 2026: 44 from HPD. 26 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 15 years, since October 15, 2010.

Is 523 Blake Avenue, Brooklyn getting better or worse?

Certifications are being filed about as fast as new violations come in. 35 certifications filed and 20 new Class C in the last 180 days, neither far ahead. 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 523 Blake Avenue, Brooklyn?

Since September 29, 2023, certifications were filed on 26 Class C violations, all 26 by the original certify-by date. HPD now marks 13 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 523 Blake Avenue, Brooklyn have active DOB violations?

Yes. 10 active DOB violations. The newest was issued January 6, 2022. 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 523 Blake Avenue, Brooklyn in housing court?

Yes. 1 open housing court case, opened November 30, 2022. 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 523 Blake Avenue, Brooklyn marked completed?

Yes. 2 completed HPD emergency repair orders since September 29, 2023, awarded for $690 in total. The most recent of the 2, a general construction order, was opened March 18, 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 523 Blake Avenue, Brooklyn last inspected?

It has 2 boilers, both inspected in 2026, the latest on June 2. 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 523 Blake Avenue, Brooklyn last file its bedbug report?

On December 2, 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 523 Blake 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 523 Blake Avenue, Brooklyn built?

The city's record gives 1930 as the year 523 Blake 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 523 Blake Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 16 residential units at 523 Blake 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 DOB violations, 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 DOB violations, 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, 523 Blake Ave, 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/523-blake-avenue-brooklyn

How we count: /method.

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