Mold violations in Manhattan.

1.8% of Manhattan’s mold violations are marked Not Complied With, against 2.1% citywide.

See what is open on one building.

18,660 mold violations cited in Manhattan over the last three years.

What this means

A mold violation means the owner has to correct the condition under the housing maintenance code, and larger mold jobs fall under Local Law 55 as well. HPD tracks each cited condition until the owner certifies the correction.

Manhattan, by category: Heat and hot water, Lead paint, Vermin and pests, Water leaks, Electrical. All five boroughs

How an HPD mold violation gets issued

Most of these violations start with a tenant's call to 311. HPD schedules an inspection, and if the inspector confirms the condition, HPD issues a violation and mails the owner a Notice of Violation. From then on anyone can look it up on HPD Online by address, and it stays open until HPD accepts a correction or closes the case another way. See how HPD, DOB, and OATH/ECB fit together.

When Manhattan mold violations are cited, by month

Mold violations HPD has cited in Manhattan, by calendar month, over the last 36 complete months, so every month is counted across the same three years. August has the most, 1,912. December has the fewest, 1,281.

Mold violations by class: A, B and C

HPD sorts every mold violation into one of three classes, and the class sets the correction window and how urgently an owner must act. In Manhattan, HPD has issued 1,810 Class C mold violations, immediately hazardous, correct within 24 hours. It has issued 8,989 Class B, hazardous, correct within 30 days, and 8,909 Class A, not hazardous, correct within 90 days.

Class C is 9.2% of the 19,708 mold violations recorded in Manhattan.

How often Manhattan mold violations get certified corrected

279 of Manhattan’s 1,810 Class C mold violations have ever been certified corrected, 15.4%. Those certifications came a median of 33 days after the inspection, and 260 days at the 90th percentile. 577 have gone more than a year with no certification at all, 31.9% of the class.

Not Complied With is HPD’s status for a violation whose certify-by date came and went without an accepted certification. 1.8% of mold violations in Manhattan carry it.

What happens after an HPD certification is filed

A filed certification is not a closed case. HPD reviews the paperwork, and paperwork it finds insufficient sends the case to Defect Letter Issued, which means filing again. A reinspection that still finds the condition sends it to Invalid Certification instead. The filing date sets the rest: filed by the certify-by date, the violation shows NOV Certified On Time; filed after it, NOV Certified Late. The status glossary explains each one.

Manhattan against the rest of New York City

Manhattan has 19,708 of the city’s 131,470 mold violations, 15.0%. Here is every borough’s total for the same category.

Which Manhattan streets carry the most open mold violations

These are the Manhattan streets carrying the most open mold violations.

Open means HPD still lists the violation as open.

Manhattan buildings with open mold violations

12 of the 920 Manhattan buildings with open mold violations and a page here, a different 12 each week, listed by street. Each count covers mold violations only, counted on September 27, 2026.

• 2305 2 Avenue, Manhattan 3 open mold violations
• 299 Broome Street, Manhattan 3 open mold violations
• 18 East 116 Street, Manhattan 1 open mold violation
• 111 Mott Street, Manhattan 1 open mold violation
• 71 St Nicholas Avenue, Manhattan 2 open Class C mold violations
• 88 Wadsworth Avenue, Manhattan 1 open Class C mold violation
• 127 West 43 Street, Manhattan 1 open Class C mold violation
• 170 West 136 Street, Manhattan 2 open mold violations
• 133 West 144 Street, Manhattan 2 open Class C mold violations
• 521 West 150 Street, Manhattan 2 open mold violations
• 619 West 163 Street, Manhattan 1 open Class C mold violation
• 580 West 176 Street, Manhattan 20 open mold violations

Every HPD status on Manhattan mold violations

Every current status HPD has given a mold violation in Manhattan, most common first. Each name links to its own page in the glossary.

The tables count violations across the borough, from our copy of HPD’s data: 19,708 mold violations in Manhattan. The buildings listed above link to their own pages; no owner is named here. Citywide, this week’s docket, ViolationScout.