The record, live: Brooklyn
Mold violations in Brooklyn.
mold violations cited in Brooklyn in the trailing 3 years, read from the city’s open-data API at this deploy.
What this means
Mold conditions trigger correction requirements under the housing maintenance code and, at scale, Local Law 55 obligations. The record tracks each cited condition until certified.
In the verified feed
747 case files in Brooklyn right now, 440 carrying ten or more open Class C hazards, median 21 per file. Stamped August 25, 2026, refreshed nightly.
If you own or manage this building, correct the violation and file the certification directly with HPD. This page only tracks the public record. How to read it, and check your own building.
If you track Brooklyn for a living, see the full shape of the work: source-linked case files, ready for a hand-verified brief.
How a violation reaches this record
Most rows here start with a tenant's call to 311. HPD schedules an inspection, and if an inspector confirms the condition, HPD issues a violation and mails the owner a Notice of Violation. From that point the violation is searchable on HPD Online by address. It stays on the public record used throughout this site until the agency accepts a correction or the agency closes the case another way. See how HPD, DOB, and OATH/ECB fit together.
The monthly pattern
Mold violations HPD has cited in Brooklyn, by calendar month, over the last 36 complete months so every month is counted across the same three years. October carries the most at 3,869. June carries the fewest at 2,664.
| Month | Violations |
|---|---|
| January | 3,466 |
| February | 2,993 |
| March | 3,205 |
| April | 3,268 |
| May | 2,920 |
| June | 2,664 |
| July | 2,979 |
| August | 3,422 |
| September | 3,312 |
| October | 3,869 |
| November | 3,352 |
| December | 3,335 |
By class
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 Brooklyn, HPD has issued 3,338 Class C mold violations, immediately hazardous, correct within 24 hours. It has issued 17,018 Class B, hazardous, correct within 30 days, and 19,094 Class A, not hazardous, correct within 90 days.
Class C is 8.5% of the 39,450 mold violations recorded in Brooklyn.
The certification record
Of 3,338 Class C mold violations in Brooklyn, 555 have ever been certified corrected, 16.6%. Correction took a median of 33 days and a 90th percentile of 224 days. 2,144 have sat open more than a year with no certification on file.
2.3% of mold violations in Brooklyn are currently marked Not Complied With, HPD's status once the certify-by date passes without an accepted certification.
After a certification is filed
Filing a certification does not automatically close a case. If HPD reviews the paperwork and finds it insufficient, the case moves to Defect Letter Issued and the owner must refile. If a reinspection later finds the condition still uncorrected despite a certification on file, the case moves to Invalid Certification. A certification accepted after the certify-by date is marked NOV Certified Late rather than on time; one accepted before it is marked NOV Certified On Time. Each of these statuses carries its own page in the status glossary, decoded in plain language.
Against the citywide figure
Brooklyn has recorded 39,450 mold violations, 30.6% of the citywide total of 128,715. Here is every borough's total for the same category.
| Borough | Mold violations |
|---|---|
| Bronx | 52,922 |
| Brooklyn | 39,450 |
| Manhattan | 19,289 |
| Queens | 14,093 |
| Staten Island | 2,961 |
Where it concentrates
The streets carrying the most open mold violations in Brooklyn, aggregated by street, never by building or owner:
| Street | Open violations |
|---|---|
| Ocean Avenue | 499 |
| Lincoln Avenue | 494 |
| Eldert Lane | 396 |
| East 21 Street | 224 |
| Eastern Parkway | 206 |
| Nostrand Avenue | 180 |
| Linden Boulevard | 166 |
| East 93 Street | 149 |
Open means the current status is neither Violation Dismissed nor Violation Closed.
The status breakdown
Every current status HPD has recorded against a mold violation in Brooklyn, most common first. Each status name links to its own page in the glossary where one exists.
| Status | Violations |
|---|---|
| Violation Closed | 17,461 |
| Violation Dismissed | 6,813 |
| First No Access To Re- Inspect Violation | 5,390 |
| Notice Of Issuance Sent To Tenant | 3,877 |
| Defect Letter Issued | 3,184 |
| Not Complied With | 916 |
| Nov Sent Out | 704 |
| Violation Will Be Reinspected | 516 |
| Civ14 Mailed | 181 |
| Invalid Certification | 159 |
| Nov Certified Late | 128 |
| Second No Access To Re-Inspect Violation | 44 |
| Violation Open | 31 |
| Nov Certified On Time | 23 |
| False Certification | 11 |
| Certification Postponment Granted | 8 |
| Certification Postponment Denied | 4 |
Aggregates only; no building or owner is named here. The monthly, class, certification, street, and status figures above are queried from HPD's own violation record, pulled August 27, 2026, based on 39,450 mold violation rows in Brooklyn. Sources: NYC Open Data (HPD violations), cited not linked. The citywide record, this week’s docket, ViolationScout.