Plumbing Permit requirements across Arizona
By Mario Bailey Last verified 2026-06-17
Requirements and size thresholds for plumbing permits vary by locality. The table below compares what each Arizona county or city requires. Always confirm with the local office before starting.
| Locality | Permit required? | Typical threshold |
|---|---|---|
| Maricopa County | Yes | Not specified |
| Mesa | Yes | Not specified |
| Phoenix | Yes | Not specified |
| Scottsdale | Yes | Not specified |