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ViolationScout5 open Class C, with nothing filed or new in the last 180 days.Your building
Buildings100 Cooper Street, BrooklynCurrent through

100 Cooper St, Brooklyn

BBL 3-03439-0035

Built
1920
Floors
3
Residential units
4
Building type
Residence with stores or offices
Zoning district
R6
Lot area
1,840 sq ft
Floor area
3,818 sq ft

En español: 5 violaciones de Clase C abiertas (peligro inmediato) y 15 abiertas en total. La más antigua del HPD lleva 51 años abierta, desde el 13 de junio de 1975.

Open now, most hazardous first

  1. 5

    Class C, immediately hazardous. Most often Heat / Hot Water.

    15 open counting every year, the oldest since

    Get these certified
  2. 10

    Class B, hazardous

    See the 10

Open violations are sitting, with little movement either way. 5 open Class C, with nothing filed or new in the last 180 days.

The original certify-by dates on the 15 open HPD violations have all passed. The latest was April 21, 2025. The report prints the date beside each one.

Is this your building?

5 open Class C. The oldest open HPD violation was filed June 13, 1975.

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.

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

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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
2 FDNY summonses here since January 1, 2019, with $300 in penalties imposed.
  • July 16, 2026, FDNY: Portable fire extinguishers and fire hoses. In violation, $300 penalty imposed.
  • May 21, 2022, FDNY: Recordkeeping. In violation.
DOF tax lien sale
Listed for DOF's 2025 tax lien sale. The last list it appeared on was the final sale list of June 2025.
DOB violations
13 active DOB violations, most of them for low-pressure boilers. The newest was issued November 14, 2025.
Housing court
2 housing court cases here since 2006.

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

FiledCategoryStatusNumber
Class C5 open most often Heat / Hot Water
Heat / Hot WaterNotice sent17717505
Notice sent17717500
Notice sent17717497
Heat / Hot WaterNotice sent17716899
Notice sent17716895
Class B10 open
Notice sent17717778
Notice sent17717509
Notice sent17717508
Notice sent17717507
Notice sent17717501
Notice sent17717495
Notice sent17716897
Notice sent17716896
Notice sent17716892
Notice sent17716891

The full report on 100 Cooper St, 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 100 Cooper Street, Brooklyn have open violations?

Yes. 100 Cooper Street, Brooklyn had 15 open violations on October 10, 2026: 15 from HPD. 5 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 51 years, since June 13, 1975.

Is 100 Cooper Street, Brooklyn getting better or worse?

Open violations are sitting, with little movement either way. 5 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 100 Cooper Street, Brooklyn have active DOB violations?

Yes. 13 active DOB violations, most of them for low-pressure boilers. The newest was issued November 14, 2025. 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 100 Cooper Street, Brooklyn been in housing court?

Yes. 2 housing court cases here since 2006. 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.

When was 100 Cooper Street, Brooklyn built?

The city's record gives 1920 as the year 100 Cooper Street, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as a residence with stores or offices with 3 floors.

How many apartments does 100 Cooper Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 4 residential units at 100 Cooper 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, DOF's tax lien sale lists, DOB violations, HPD's housing court cases 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, DOF's tax lien sale lists, DOB violations, HPD's housing court cases 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, 100 Cooper St, Brooklyn: 4 units, 5 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through October 10, 2026. https://violationscout.com/building/100-cooper-street-brooklyn

How we count: /method.

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