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ViolationScout3 open Class C, with nothing filed or new in the last 180 days.Your building
Buildings423 Chester Street, BrooklynCurrent through

423 Chester St, Brooklyn

BBL 3-03589-0012

Built
2006
Floors
5
Residential units
44
Building type
Elevator building
Zoning district
R6
Lot area
12,000 sq ft
Floor area
29,000 sq ft

En español: 3 violaciones de Clase C abiertas (peligro inmediato) y 5 abiertas en total. La más antigua del HPD lleva 5 años abierta, desde el 19 de abril de 2021.

Open now, most hazardous first

  1. 3

    Class C, immediately hazardous. Most often Vermin / Infestation.

    4 open counting every year, the oldest since

    Get these certified
  2. 2

    Class B, hazardous

    See the 2

Open violations are sitting, with little movement either way. 3 open Class C, with nothing filed or new in the last 180 days.

The original certify-by dates on the 5 open HPD violations have all passed. The latest was May 26, 2025. The report prints the date beside each one.

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3 open Class C. The oldest open HPD violation was filed April 19, 2021.

A firm we work with can take these on. We reply within one business day with the firm's name. You decide whether to talk to them. One firm, not a list.

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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.

For a letter to your landlord or a housing court case, the report lists every open violation here, each in the city's own words with the date on its notice. Get the report, $19

OATH/ECB summonses
4 DOB and FDNY summonses here since January 1, 2019, with $1,000 in penalties imposed.
  • June 16, 2026, FDNY: Fire protection systems. Decided by default, $1,000 penalty imposed.
  • March 24, 2023, FDNY: Inspection and testing. In violation.
  • September 29, 2021, DOB: Failure to maintain elevator or conveying system. Dismissed.

The newest 3 of 4 summonses OATH lists here. The report lists all 4, with each outcome, the penalty imposed and any docketing date. What the report adds

How a default is vacated

DOB violations
5 active DOB violations, most of them for low-pressure boilers. The newest was issued June 30, 2023.
Housing court
1 housing court case here, opened in 2024.
Energy benchmarking
ENERGY STAR score 47 for 2024, against a median of 67 for Multifamily Housing that year.
Local Law 97
Covered since 2024 (DOB's list, March 1, 2026).
Boiler inspection
2 boilers, inspected between January 28, 2025 and October 7, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year. Need this filed?
HPD emergency repair order
1 completed HPD emergency repair order since October 12, 2023: a general construction order, opened July 22, 2025, awarded for $520.

Open violations by class. A party is named only where the building's HPD registration covers the date a violation was filed.

FiledCategoryStatusNumber
Class C3 open most often Vermin / Infestation
Vermin / InfestationNotice sent to tenant17802156
Heat / Hot WaterNotice sent16525974
Vermin / InfestationNotice sent to tenant16457822
Class B2 open
Notice sent17802155
Notice sent16881178

The full report on 423 Chester 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 423 Chester Street, Brooklyn have open violations?

Yes. 423 Chester Street, Brooklyn had 5 open violations on October 10, 2026: 5 from HPD. 3 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 5 years, since April 19, 2021.

Is 423 Chester Street, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 3 open Class C, with nothing filed or new in the last 180 days. That window ends October 10, 2026. It compares certifications filed with new Class C violations, and it describes what happened, not what anyone intends.

Does 423 Chester Street, Brooklyn have active DOB violations?

Yes. 5 active DOB violations, most of them for low-pressure boilers. The newest was issued June 30, 2023. 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 423 Chester Street, Brooklyn been in housing court?

Yes. 1 housing court case here, opened in 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 423 Chester Street, Brooklyn marked completed?

Yes. 1 completed HPD emergency repair order since October 12, 2023: a general construction order, opened July 22, 2025, awarded for $520. 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 423 Chester Street, Brooklyn?

ENERGY STAR score 47 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 423 Chester Street, Brooklyn last inspected?

It has 2 boilers, inspected between January 28, 2025 and October 7, 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.

Is 423 Chester Street, Brooklyn covered by Local Law 97?

Yes. It is on DOB's Local Law 97 covered buildings list. Covered since 2024 (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.

When was 423 Chester Street, Brooklyn built?

The city's record gives 2006 as the year 423 Chester Street, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as an elevator building with 5 floors.

How many apartments does 423 Chester Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 44 residential units at 423 Chester 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 OATH/ECB summonses from DOB and FDNY, DOB violations, HPD's housing court cases, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection reports, DOB's Local Law 97 covered buildings list and the city's PLUTO tax-lot file. This page is current through October 10, 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/ECB summonses from DOB and FDNY, DOB violations, HPD's housing court cases, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection 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, 423 Chester St, Brooklyn: 44 units, 3 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through October 10, 2026. https://violationscout.com/building/423-chester-street-brooklyn

How we count: /method.

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