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ViolationScout10 open Class C, with nothing filed or new in the last 180 days.Is this your building?
Buildings484 East 23 Street, BrooklynCurrent through

484 East 23rd St, Brooklyn

BBL 3-05222-0082

En español: 10 violaciones de Clase C abiertas (peligro inmediato) y 24 abiertas en total. La más antigua del HPD lleva 38 años abierta, desde el 22 de agosto de 1988.

Open violations are sitting, with little movement either way. 10 open Class C, with nothing filed or new in the last 180 days.

The oldest open HPD violation has been open 38 years, since August 22, 1988.

Since September 29, 2023, certifications were filed on 27 Class C violations, all 27 by the original certify-by date. HPD now marks 2 of them False Certification. How certification works

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10 open Class C. The oldest open HPD violation was filed August 22, 1988.

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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
2 active DOB violations. The newest was issued March 3, 2015.
Energy benchmarking
ENERGY STAR score 25 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 May 1, 2026. 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).

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 most often Vermin / Infestation
MoldNotice sent to tenant18442144490 EAST 23 LLC
Vermin / InfestationNotice sent to tenant18328748490 EAST 23 LLC
Vermin / InfestationNotice sent to tenant18328747490 EAST 23 LLC
Vermin / InfestationFalse certification18292048490 EAST 23 LLC
Vermin / InfestationFalse certification18292047490 EAST 23 LLC
Vermin / InfestationNotice sent to tenant18104586
Vermin / InfestationNotice sent to tenant18104585
Fire SafetyNot complied with17739094
Fire SafetyNot complied with17739093
Notice sent16853606
Class B14 open most often Mold
MoldNotice sent to tenant18524689490 EAST 23 LLC
Notice sent18328749490 EAST 23 LLC
Notice sent18328745490 EAST 23 LLC
Notice sent18104588
Notice sent18104587
Notice sent16932658
Notice sent16932657
Notice sent16932654
MoldDefect letter sent17195629
Notice sent16853609
The report lists all 14, each with the city's own words and the date on its notice. What the report adds

The full report on 484 East 23rd St, Brooklyn

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

Vermin and pests in Brooklyn

Nearby buildings

Questions about this building

Does 484 East 23 Street, Brooklyn have open violations?

Yes. 484 East 23 Street, Brooklyn had 24 open violations on September 27, 2026: 24 from HPD. 10 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 38 years, since August 22, 1988.

Is 484 East 23 Street, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 10 open Class C, with nothing filed or new 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 484 East 23 Street, Brooklyn?

Since September 29, 2023, certifications were filed on 27 Class C violations, all 27 by the original certify-by date. HPD now marks 2 of them False 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 484 East 23 Street, Brooklyn have active DOB violations?

Yes. 2 active DOB violations. The newest was issued March 3, 2015. 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.

What is the ENERGY STAR score for 484 East 23 Street, Brooklyn?

ENERGY STAR score 25 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 484 East 23 Street, Brooklyn last inspected?

On May 1, 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 484 East 23 Street, 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 484 East 23 Street, 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 484 East 23 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 484 East 23 Street, Brooklyn built?

The city's record gives 1931 as the year 484 East 23 Street, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as an elevator apartment building with 6 floors.

How many apartments does 484 East 23 Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 40 residential units at 484 East 23 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, 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 DOB violations, the Rent Guidelines Board's stabilized-building lists, 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, 484 East 23rd St, Brooklyn: 10 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/484-east-23-street-brooklyn

How we count: /method.

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