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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.

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

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16 open Class C.

We read every request ourselves. When a compliance firm we work with can take the building, we introduce you to that one firm. One firm, not a list.

Your details stay with us, and go only to the one firm you are introduced to. No lists, no resale.

¿Es su edificio? Déjenos un correo o un teléfono. Leemos cada solicitud.

Or file it yourself: what it can hold up, and how correction is filed

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: which violations matter, and how long this kind usually takes to clear. It is not on sale yet.

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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 in the last 12 months, 1 of them conversion complaint. 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).

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
Heat / Hot WaterNotice sent17341595
Heat / Hot WaterNot complied with17334874
Vermin / InfestationDefect letter sent17306386
Vermin / InfestationDefect letter sent17306385
Heat / Hot WaterNot complied with16647242
Heat / Hot WaterNot complied with16647240
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

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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 26, 2026: 6 from OATH/ECB and 21 from HPD. 16 are Class C, the class HPD treats as immediately hazardous.

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 26, 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 in the last 12 months, 1 of them conversion complaint. 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.

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's Local Law 97 covered buildings list and the city's PLUTO tax-lot file. This page is current through September 26, 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'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: 16 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/421-crown-street-brooklyn

How we count: /method.

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