Phoenix is a moderate cost-of-living market — pricing guide and permit rules below.
Phoenix plumbing rates: $90-$170/hr. Always get 3 written quotes and verify AZ licensing at Arizona ROC (roc.az.gov). Sales tax on materials: 8-11%.
Phoenix requires permits when work exceeds $1,000 or involves full system replacement. Your licensed contractor pulls the permit — if they ask you to pull it, that's a red flag.