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ViolationScout7 open Class C, with 6 certifications filed and 3 new Class C in the last 180 days, too few to call a direction.Your building
Buildings9 Thayer Street, ManhattanCurrent through

9 Thayer St, Manhattan

BBL 1-02174-0236

Built
1920
Floors
6
Residential units
88
Building type
Elevator building
Zoning district
R7A
Lot area
20,000 sq ft
Floor area
85,704 sq ft

En español: 7 violaciones de Clase C abiertas (peligro inmediato). La más antigua del HPD lleva 4 años abierta, desde el 9 de diciembre de 2021.

Open now

  1. 7

    Class C, immediately hazardous. Most often Fire Safety.

    8 open counting every year, the oldest since

    Get these certified

Open violations are sitting, with little movement either way. 7 open Class C, with 6 certifications filed and 3 new Class C in the last 180 days, too few to call a direction.

Since October 12, 2023, certifications were filed on 4 Class C violations, all 4 by the original certify-by date. How certification works

The original certify-by dates on the 7 open HPD violations have all passed. The latest was August 8, 2026. The report prints the date beside each one.

Is this your building?

7 open Class C. The oldest open HPD violation was filed December 9, 2021.

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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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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 DOB summonses here since January 1, 2019, with $1,562 in penalties imposed.
  • April 8, 2025, DOB: Failure to maintain elevator or conveying system. In violation, $1,250 penalty imposed.
  • March 16, 2019, DOB: Failure to maintain elevator or conveying system. In violation, $312 penalty imposed.
DOB violations
1 active DOB violation, issued September 6, 2019.
Housing court
1 open housing court case, opened May 4, 2026. 9 housing court cases here since 2006.
DOB permits
DOB NOW lists 2 work permits here, the newest issued April 7, 2022, for Sidewalk Shed work.
  • Sidewalk Shed, issued April 7, 2022, expired February 11, 2023.
  • Antenna, issued February 11, 2022, signed off.
Energy benchmarking
ENERGY STAR score 53 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 June 4, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed December 8, 2025, for the year to October 31, 2025. Buildings with 3 or more apartments file one with HPD every year.
Rent stabilization
Has rent-stabilized apartments (2024 registration).

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

FiledCategoryStatusNumber
Class C7 open most often Fire Safety
Fire SafetyNotice sent19087919
Fire SafetyNotice sent19087903
Fire SafetyNotice sent19087894
Fire SafetyNot complied with17532915
Fire SafetyNot complied with17428573
Fire SafetyNot complied with17067534
Fire SafetyNot complied with17067533

The full report on 9 Thayer St, Manhattan

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Questions about this building

Does 9 Thayer Street, Manhattan have open violations?

Yes. 9 Thayer Street, Manhattan had 7 open violations on October 10, 2026: 7 from HPD. 7 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 4 years, since December 9, 2021.

Is 9 Thayer Street, Manhattan getting better or worse?

Open violations are sitting, with little movement either way. 7 open Class C, with 6 certifications filed and 3 new Class C in the last 180 days, too few to call a direction. That window ends October 10, 2026. It compares certifications filed with new Class C violations, and it describes what happened, not what anyone intends.

When were certifications filed on Class C violations at 9 Thayer Street, Manhattan?

Since October 12, 2023, certifications were filed on 4 Class C violations, all 4 by the original certify-by date. A certification is the filing, dated when it was made, not HPD's acceptance of it. It is compared with the original certify-by date on the notice. A granted postponement moves that date and the city's data keeps only the first, so a certification counted after it may still have met a postponed date.

Does 9 Thayer Street, Manhattan have active DOB violations?

Yes. 1 active DOB violation, issued September 6, 2019. 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 9 Thayer Street, Manhattan in housing court?

Yes. 1 open housing court case, opened May 4, 2026. 9 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.

What is the ENERGY STAR score for 9 Thayer Street, Manhattan?

ENERGY STAR score 53 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 9 Thayer Street, Manhattan last inspected?

On June 4, 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 9 Thayer Street, Manhattan last file its bedbug report?

On December 8, 2025, 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 9 Thayer Street, Manhattan 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.

Is 9 Thayer Street, Manhattan rent stabilized?

The building has rent-stabilized apartments on its 2024 registration. That comes from the Rent Guidelines Board's list of buildings with at least one stabilized apartment registered that year. Buildings that registered late are left off, and a 421-a or J-51 building can leave stabilization when its tax benefit ends. A particular apartment's status is for NYS HCR to say.

When was 9 Thayer Street, Manhattan built?

The city's record gives 1920 as the year 9 Thayer Street, Manhattan was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as an elevator building with 6 floors.

How many apartments does 9 Thayer Street, Manhattan have?

The Department of City Planning's PLUTO tax-lot file lists 88 residential units at 9 Thayer 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 OATH/ECB summonses from DOB and FDNY, DOB violations, HPD's housing court cases, the Rent Guidelines Board's stabilized-building lists, 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 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, DOB violations, HPD's housing court cases, the Rent Guidelines Board's stabilized-building lists, 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, 9 Thayer St, Manhattan: 88 units, 7 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through October 10, 2026. https://violationscout.com/building/9-thayer-street-manhattan

How we count: /method.

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