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ViolationScout16 open Class C, with nothing filed or new in the last 180 days.Is this your building?
Buildings421 Crown Street, BrooklynCurrent through

421 Crown St, Brooklyn

BBL 3-01292-0001

En español: 16 violaciones de Clase C abiertas (peligro inmediato) y 27 abiertas en total. La más antigua del HPD lleva 50 años abierta, desde el 27 de septiembre de 1976.

Open violations are sitting, with little movement either way. 16 open Class C, with nothing filed or new in the last 180 days.

The oldest open HPD violation has been open 50 years, since September 27, 1976.

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16 open Class C. The oldest open HPD violation was filed September 27, 1976.

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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
18 active DOB violations, most of them for not benchmarking energy use. The newest was issued November 26, 2024.
DOB complaints
11 DOB complaints, 1 of them conversion complaint, in the 12 months to September 25, 2026. The newest was filed June 19, 2026.
DOB permits
1 DOB work permit in effect, for Sidewalk Shed work, issued July 28, 2026.
Energy benchmarking
ENERGY STAR score 43 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 26, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed August 3, 2026, for the year to October 31, 2025. Buildings with 3 or more apartments file one with HPD every year.

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 C16 open
Notice sent17704024
Notice sent17704023
Heat / Hot WaterNotice sent17704022
Fire SafetyNotice sent17605086
Fire SafetyNotice sent17593433
Notice sent17593432
Fire SafetyNotice sent17385577
Fire SafetyNotice sent17385557
Fire SafetyNotice sent17385508
Notice sent17385493
The report lists all 16, each with the city's own words and the date on its notice. What the report adds
Class B5 open most often Fire Safety
Notice sent17704025
Fire SafetyNotice sent17593434
Notice sent17385550
Fire SafetyNotice sent17385513
Not complied with16995080
OATH/ECB6 open most often Construction
Construction, Class 2Admitted39184787P421 CROWN ST HDFC
Construction, Class 1Decided by default39155038P
Construction, Class 2Decided by default39154562R
Class 2Decided by default39127348M
Construction, Class 1Decided by default39115091H
Construction, Class 1Decided by default39098477Z

The full report on 421 Crown St, Brooklyn

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Questions about this building

Does 421 Crown Street, Brooklyn have open violations?

Yes. 421 Crown Street, Brooklyn had 27 open violations on September 27, 2026: 6 from OATH/ECB and 21 from HPD. 16 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 50 years, since September 27, 1976.

Is 421 Crown Street, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 16 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.

Does 421 Crown Street, Brooklyn have active DOB violations?

Yes. 18 active DOB violations, most of them for not benchmarking energy use. The newest was issued November 26, 2024. 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 421 Crown Street, Brooklyn?

Yes. 11 DOB complaints, 1 of them conversion complaint, in the 12 months to September 25, 2026. The newest was filed June 19, 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 DOB work permits in effect at 421 Crown Street, Brooklyn?

Yes. 1 DOB work permit in effect, for Sidewalk Shed work, issued July 28, 2026. A permit in effect allows the work it names. It does not mean the work has started or finished, or that it fixes any violation on this page.

What is the ENERGY STAR score for 421 Crown Street, Brooklyn?

ENERGY STAR score 43 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 421 Crown Street, Brooklyn last inspected?

On May 26, 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 421 Crown Street, Brooklyn last file its bedbug report?

On August 3, 2026, 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 421 Crown 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.

When was 421 Crown Street, Brooklyn built?

The city's record gives 1923 as the year 421 Crown 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 421 Crown Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 39 residential units at 421 Crown 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, DOB complaints, DOB NOW work permits, 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, DOB complaints, DOB NOW work permits, 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, 421 Crown St, Brooklyn: 39 units, 16 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/421-crown-street-brooklyn

How we count: /method.

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