Mold violations in the Bronx.
The Bronx certifies 20.5% of its Class C mold violations, the highest of the five boroughs. Citywide the rate is 17.9%.
See what is open on one building.
51,441 mold violations cited in the Bronx 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.
If you own the building. Time does not clear an HPD mold violation. It stays open until a certification is filed and accepted or HPD closes it, and a sale, a refinance or a permit review reads the building’s history. What to do if it is your building.
If you work the Bronx for a living. 1,787 Class C mold violations here have sat open more than a year with no certification on file.
Our current feed holds 1,046 Bronx case files across all categories, and 809 of them carry ten or more open Class C hazards. The median file carries 29. We can send a hand-checked file of the open Class C mold violations here.
Get leads for your boroughsPreview the Bronx feed
If you rent here. These are conditions an inspector confirmed. HPD’s data does not show whether they were fixed, only whether the owner ever certified a repair. What each status means.
The Bronx, 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 Bronx mold violations are cited, by month
Mold violations HPD has cited in the Bronx, by calendar month, over the last 36 complete months, so every month is counted across the same three years. January has the most, 5,057. August has the fewest, 3,637.
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 the Bronx, HPD has issued 5,526 Class C mold violations, immediately hazardous, correct within 21 days. It has issued 25,128 Class B, hazardous, correct within 30 days, and 24,272 Class A, not hazardous, correct within 90 days. The windows are from HPD's correction table.
Class C is 10.1% of the 54,926 mold violations recorded in the Bronx.
How often Bronx mold violations get certified corrected
The certification rate on the Bronx’s Class C mold violations is 20.5%: 1,132 filings against 5,526 violations issued. Half of those filings came within 34 days of the inspection and nine in ten within 270. 1,787 violations, 32.3%, are more than a year old with nothing filed.
Not Complied With is HPD’s status for a violation a reinspection found uncorrected. 2.0% of mold violations in the Bronx carry it.
What happens after an HPD certification is filed
HPD reads the certification before anything closes. Documents with a defect come back as Invalid Certification and have to be filed again. A reinspection that finds the cited condition not properly corrected comes back as False Certification, the worse of the two. A filing made inside the certify-by date shows NOV Certified On Time, and one made outside it NOV Certified Late, which HPD does not accept. Defect Letter Issued is the reverse case: the inspector saw the fix, and the documents are what is missing. The glossary covers each status.
The Bronx against the rest of New York City
The Bronx has 54,926 of the city’s 134,108 mold violations, 41.0%. Here is every borough’s total for the same category.
| Borough | Mold violations |
|---|---|
| Bronx | 54,926 |
| Brooklyn | 41,282 |
| Manhattan | 20,123 |
| Queens | 14,665 |
| Staten Island | 3,112 |
Which Bronx streets carry the most open mold violations
These are the Bronx streets carrying the most open mold violations.
| Street | Open violations |
|---|---|
| Grand Concourse | 641 |
| Morris Avenue | 408 |
| Walton Avenue | 317 |
| University Avenue | 286 |
| Davidson Avenue | 250 |
| Sedgwick Avenue | 231 |
| Prospect Avenue | 228 |
| Washington Avenue | 215 |
Open means HPD still lists the violation as open.
Bronx buildings with open mold violations
12 of the 2,119 Bronx 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 October 17, 2026.
- 352 Beekman Avenue, Bronx 1 open Class C mold violation
- 2260 Bronx Park East, Bronx 1 open mold violation
- 1237 College Avenue, Bronx 5 open mold violations
- 2419 Davidson Avenue, Bronx 1 open Class C mold violation
- 455 East 148 Street, Bronx 1 open Class C mold violation
- 413 East 154 Street, Bronx 1 open mold violation
- 675 East 233 Street, Bronx 4 open mold violations
- 3511 Hull Avenue, Bronx 2 open mold violations
- 638 Manida Street, Bronx 5 open mold violations
- 2619 Sedgwick Avenue, Bronx 2 open mold violations
- 3605 Sedgwick Avenue, Bronx 1 open Class C mold violation
- 2070 Vyse Avenue, Bronx 4 open Class C mold violations
Every HPD status on Bronx mold violations
Every current status HPD has given a mold violation in the Bronx, most common first. Each name links to its own page in the glossary.
Cite this page
ViolationScout, Bronx mold violations, read from our copy of HPD's Housing Maintenance Code Violations dataset (NYC Open Data, wvxf-dwi5). Figures through October 17, 2026, read on October 19, 2026. https://violationscout.com/nyc/bronx-mold
Monthly, class, certification, street and status figures count HPD violations whose description matches mold in the Bronx; the three-year count at the top is read from the city's open-data API when the page is built. Source: NYC Open Data. How every figure here is counted: /methodology.
The tables count violations across the borough, from our copy of HPD’s data: 54,926 mold violations in the Bronx. The buildings listed above link to their own pages; no owner is named here. Citywide, this week’s docket, ViolationScout.