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ViolationScout10 open Class C, with 7 certifications filed and 2 new Class C in the last 180 days, too few to call a direction.Is this your building?
Buildings42 Thayer Street, ManhattanCurrent through

42 Thayer St, Manhattan

BBL 1-02174-0208

En español: 10 violaciones de Clase C abiertas (peligro inmediato) y 42 abiertas en total.

Open violations are sitting, with little movement either way. 10 open Class C, with 7 certifications filed and 2 new Class C in the last 180 days, too few to call a direction.

Since September 28, 2023, certifications were filed on 2 Class C violations, all 2 by the original certify-by date. HPD now marks 1 of them Invalid Certification. How certification works

Is this your building?

10 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.

See what the report covers

HPD takes complaints from tenants through 311.

DOB violations
3 active DOB violations, most of them for facade reports not filed or filed late. The newest was issued May 31, 2018.
DOB facade
Rated SWARMP in the latest facade report, filed March 9, 2021 (inspection cycle 9). SWARMP means safe with a repair and maintenance program. Need this filed?
Energy benchmarking
ENERGY STAR score 47 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).
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.

FiledCategoryStatusNumberRegistered party when filed
Class C10 open most often Heat / Hot Water
MoldNotice sent to tenant1896360442 THAYER LLC
MoldNotice sent to tenant1887590242 THAYER LLC
Notice sent1864904342 THAYER LLC
Heat / Hot WaterNotice sent1864904142 THAYER LLC
Notice sent1864904042 THAYER LLC
Heat / Hot WaterNotice sent1861375642 THAYER LLC
Notice sent1855215942 THAYER LLC
Heat / Hot WaterNotice sent1855215842 THAYER LLC
Vermin / InfestationNotice sent to tenant17296595
Vermin / InfestationInvalid certification16435658
Class B32 open most often Mold
MoldNo access to reinspect (first try)1887590142 THAYER LLC
Certified late1887590042 THAYER LLC
Certified late1887589942 THAYER LLC
Certified late1887589842 THAYER LLC
MoldNo access to reinspect (first try)17309704
Notice sent17309703
Notice sent17309702
MoldNo access to reinspect (first try)17309701
Invalid certification17296592
Invalid certification17296591
Fire SafetyNotice sent16794395
Fire SafetyNotice sent16794394
Notice sent16794393
Notice sent16794392
Notice sent16794391
Notice sent16794390
Notice sent16794389
Notice sent16794388
Notice sent16794387
Notice sent16794386
Notice sent16794385
Notice sent16794384
Notice sent16794383
MoldNo access to reinspect (first try)16779964
MoldNo access to reinspect (first try)16779963
Fire SafetyInvalid certification16435657
Fire SafetyInvalid certification16435656
Invalid certification16435655
Invalid certification16435653
Invalid certification16435652
Invalid certification16435650
MoldNo access to reinspect (first try)16435649

The most common category among the open records here is mold.

Mold in Manhattan

Other buildings on this tax block (12 of 15)

Nearby buildings

Questions about this building

Does 42 Thayer Street, Manhattan have open violations?

Yes. 42 Thayer Street, Manhattan had 42 open violations on September 26, 2026: 42 from HPD. 10 are Class C, the class HPD treats as immediately hazardous.

Is 42 Thayer Street, Manhattan getting better or worse?

Open violations are sitting, with little movement either way. 10 open Class C, with 7 certifications filed and 2 new Class C in the last 180 days, too few to call a direction. That window ends September 26, 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 42 Thayer Street, Manhattan?

Since September 28, 2023, certifications were filed on 2 Class C violations, all 2 by the original certify-by date. HPD now marks 1 of them Invalid Certification. 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 42 Thayer Street, Manhattan have active DOB violations?

Yes. 3 active DOB violations, most of them for facade reports not filed or filed late. The newest was issued May 31, 2018. 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.

What did the latest facade report find at 42 Thayer Street, Manhattan?

Rated SWARMP in the latest facade report, filed March 9, 2021 (inspection cycle 9). SWARMP means safe with a repair and maintenance program. Buildings taller than six stories must have their exterior walls inspected once in every inspection cycle under the city's Facade Inspection Safety Program (every five years under DOB's current rule), and each inspection report is filed with DOB as Safe, SWARMP (safe with a repair and maintenance program) or Unsafe. No Report Filed means DOB has no report for that cycle. The rating is from the latest filing and does not describe the facade today; DOB's page for the building shows anything filed since.

What is the ENERGY STAR score for 42 Thayer Street, Manhattan?

ENERGY STAR score 47 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 42 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 42 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 42 Thayer Street, Manhattan built?

The city's record gives 1939 as the year 42 Thayer Street, Manhattan was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as an elevator apartment building with 6 floors.

How many apartments does 42 Thayer Street, Manhattan have?

The Department of City Planning's PLUTO tax-lot file lists 36 residential units at 42 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 DOB violations, the Rent Guidelines Board's stabilized-building lists, DOB facade filings, 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, the Rent Guidelines Board's stabilized-building lists, DOB facade filings, 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, 42 Thayer St, Manhattan: 10 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/42-thayer-street-manhattan

How we count: /method.

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