Benchmarks → Bronx → Alteration CO
Bronx Alteration CO permits: median 83 days in review
Across 959 Alteration CO filings in Bronx over the last 24 months, the median time from filing to first permit was 83 days. One in five took longer than 193 days (the 80th percentile).
Job type: Alteration with a new Certificate of Occupancy (Alt-1/Alt-CO). Source: NYC DOB NOW public filings (data.cityofnewyork.us), recomputed weekly. Last computed 2026-08-30.
Alteration CO across the boroughs
| Borough | Median days | p80 days | Filings |
|---|---|---|---|
| Bronx | 83 | 193 | 959 |
| Brooklyn | 98 | 202 | 2,738 |
| Manhattan | 114 | 236 | 1,380 |
| Queens | 105 | 207 | 1,723 |
| Staten Island | 88 | 201 | 337 |
What this means for your filing
If your Bronx Alteration CO job has been in review for less than 83 days, it's inside the normal range — pushing DOB now is unlikely to help. Past 193 days, your filing is slower than 80% of comparable jobs and is worth chasing: check for open objections, incomplete items, or a plan-examiner queue issue.
Look up your job number free to see its live status and how it compares — or track your whole client book and get flagged automatically when any permit crosses its borough benchmark.