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ViolationScout37 open Class C, with 0 certifications filed and 8 new Class C in the last 180 days, too few to call a direction.Is this your building?
Buildings23 West 123 Street, ManhattanCurrent through

23 West 123rd St, Manhattan

BBL 1-01721-0041

En español: 37 violaciones de Clase C abiertas (peligro inmediato) y 68 abiertas en total. La más antigua del HPD lleva 51 años abierta, desde el 30 de abril de 1975.

Open violations are sitting, with little movement either way. 37 open Class C, with 0 certifications filed and 8 new Class C in the last 180 days, too few to call a direction.

The oldest open HPD violation has been open 51 years, since April 30, 1975.

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37 open Class C. The oldest open HPD violation was filed April 30, 1975.

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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.

DOB violations
5 active DOB violations, most of them for low-pressure boilers. The newest was issued September 23, 2024.
Housing court
2 open housing court cases, most of them heat and hot water cases. The newest opened July 31, 2026.
DOB complaints
3 DOB complaints, 1 of them conversion complaint, in the 12 months to September 25, 2026. The newest was filed July 1, 2026.
Boiler inspection
Inspected December 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 C37 open most often Heat / Hot Water
Heat / Hot WaterNotice sent19056873
Heat / Hot WaterNotice sent19045970
Heat / Hot WaterNotice sent19045969
Heat / Hot WaterNotice sent18991898
Heat / Hot WaterNotice sent18818517
Heat / Hot WaterNotice sent18811929
Heat / Hot WaterNotice sent18804848
Heat / Hot WaterNotice sent18804847
Heat / Hot WaterNotice sent18212926
Heat / Hot WaterNotice sent18212925
The report lists all 37, each with the city's own words and the date on its notice. What the report adds
Class B30 open most often Fire Safety
Notice sent19056874
Notice sent18981976
Notice sent18981972
MoldTo be reinspected18811933
Notice sent18811932
Notice sent18603042
Notice sent18603041
Fire SafetyNotice sent18339949
Fire SafetyNotice sent18339948
Notice sent17888568
The report lists all 30, each with the city's own words and the date on its notice. What the report adds
OATH/ECB1 open
Boilers, Class 2Decided by default39110137L

The full report on 23 West 123rd St, Manhattan

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The most common category among the open records here is heat and hot water.

Heat and hot water in Manhattan

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Questions about this building

Does 23 West 123 Street, Manhattan have open violations?

Yes. 23 West 123 Street, Manhattan had 68 open violations on September 27, 2026: 67 from HPD and 1 from OATH/ECB. 37 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 51 years, since April 30, 1975.

Is 23 West 123 Street, Manhattan getting better or worse?

Open violations are sitting, with little movement either way. 37 open Class C, with 0 certifications filed and 8 new Class C in the last 180 days, too few to call a direction. 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 23 West 123 Street, Manhattan have active DOB violations?

Yes. 5 active DOB violations, most of them for low-pressure boilers. The newest was issued September 23, 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.

Is 23 West 123 Street, Manhattan in housing court?

Yes. 2 open housing court cases, most of them heat and hot water cases. The newest opened July 31, 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.

Has DOB received complaints about 23 West 123 Street, Manhattan?

Yes. 3 DOB complaints, 1 of them conversion complaint, in the 12 months to September 25, 2026. The newest was filed July 1, 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.

When was the boiler at 23 West 123 Street, Manhattan last inspected?

On December 15, 2025. 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 was 23 West 123 Street, Manhattan built?

The city's record gives 1896 as the year 23 West 123 Street, Manhattan 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 5 floors.

How many apartments does 23 West 123 Street, Manhattan have?

The Department of City Planning's PLUTO tax-lot file lists 5 residential units at 23 West 123 Street, Manhattan. 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, HPD's housing court cases, DOB complaints, DOB boiler inspection reports 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, HPD's housing court cases, DOB complaints, DOB boiler inspection reports 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, 23 West 123rd St, Manhattan: violations, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 27, 2026. https://violationscout.com/building/23-west-123-street-manhattan

How we count: /method.

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