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ViolationScout13 new Class C against 0 certifications filed in the last 180 days.Is this your building?
Buildings638 Osborn Street, BrooklynCurrent through

638 Osborn St, Brooklyn

BBL 3-03637-0045

En español: 20 violaciones de Clase C abiertas (peligro inmediato) y 76 abiertas en total. La más antigua del HPD lleva 39 años abierta, desde el 30 de septiembre de 1986.

New violations are coming in faster than certifications are filed. 13 new Class C against 0 certifications filed in the last 180 days.

The oldest open HPD violation has been open 39 years, since September 30, 1986.

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20 open Class C. The oldest open HPD violation was filed September 30, 1986.

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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.

Alternative Enforcement Program
In HPD's Alternative Enforcement Program since February 2, 2026.
Housing court
1 open housing court case, opened April 13, 2026.
HPD emergency repair orders
6 completed HPD emergency repair orders since September 29, 2023, awarded for $7,768 in total. The most recent of the 6, a general construction order, was opened September 15, 2025.

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

FiledCategoryStatusNumber
Class C20 open most often Heat / Hot Water
No access to reinspect (first try)18823219
No access to reinspect (first try)18823216
No access to reinspect (first try)18823210
No access to reinspect (first try)18823206
No access to reinspect (first try)18823203
No access to reinspect (first try)18823201
No access to reinspect (first try)18823198
Heat / Hot WaterNo access to reinspect (first try)18823196
No access to reinspect (first try)18823190
No access to reinspect (first try)18823187
The report lists all 20, each with the city's own words and the date on its notice. What the report adds
Class B56 open
Notice sent19081353
Notice sent19081351
Notice sent18823213
Notice sent18823193
MoldNotice sent18079197
MoldNo access to reinspect (first try)17715514
Notice sent17371533
Notice sent17359161
Notice sent17359160
Notice sent17359159
The report lists all 56, each with the city's own words and the date on its notice. What the report adds

The full report on 638 Osborn St, Brooklyn

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Questions about this building

Does 638 Osborn Street, Brooklyn have open violations?

Yes. 638 Osborn Street, Brooklyn had 76 open violations on September 27, 2026: 76 from HPD. 20 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 39 years, since September 30, 1986.

Is 638 Osborn Street, Brooklyn getting better or worse?

New violations are coming in faster than certifications are filed. 13 new Class C against 0 certifications filed 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.

Is 638 Osborn Street, Brooklyn in HPD's Alternative Enforcement Program?

Yes. In HPD's Alternative Enforcement Program since February 2, 2026. HPD puts a group of buildings with serious, long-running violations into the program each year. While a building is in it, HPD can make repairs itself and charge the cost to the property, and the building stays in until HPD discharges it.

Is 638 Osborn Street, Brooklyn in housing court?

Yes. 1 open housing court case, opened April 13, 2026. 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 638 Osborn Street, Brooklyn marked completed?

Yes. 6 completed HPD emergency repair orders since September 29, 2023, awarded for $7,768 in total. The most recent of the 6, a general construction order, was opened September 15, 2025. 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.

When was 638 Osborn Street, Brooklyn built?

The city's record gives 1930 as the year 638 Osborn 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 2 floors.

How many apartments does 638 Osborn Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 4 residential units at 638 Osborn 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 HPD's Alternative Enforcement Program list, HPD's housing court cases, HPD emergency repair orders 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 HPD's Alternative Enforcement Program list, HPD's housing court cases, HPD emergency repair orders 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, 638 Osborn St, Brooklyn: 20 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/638-osborn-street-brooklyn

How we count: /method.

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