Plumbing permits and code in Tucson
Updated July 2026
Tucson plumbing permits are not a single-office system. Which agency reviews your permit depends on whether your address is inside Tucson city limits or in unincorporated Pima County, and each has its own process. A licensed plumber normally handles the paperwork, but it helps to know what to expect and who is actually in charge of your project.
When plumbing work typically needs a permit
As a general rule, plumbing work that changes or adds to a home's system, a water heater changeout, repiping, new fixtures, backflow devices, and sewer connection work, typically needs a permit in Tucson and in unincorporated Pima County. Simple like-for-like repairs, such as swapping a faucet or fixing a running toilet without altering the plumbing, are commonly exempt, but that is a general pattern, not a guarantee for your specific job. Plumbing contractors are also required to register with the City of Tucson Planning and Development Services Department before they can pull permits in the city, which is one more reason to confirm your plumber is set up correctly before work starts.
Who is the local authority
For an address inside Tucson city limits, the City of Tucson Planning and Development Services Department is the Authority Having Jurisdiction (AHJ). They can be reached at (520) 791-5550 or pdsdinquiries@tucsonaz.gov, and the Tucson Development Center at 201 N. Stone Avenue handles in-person permit business. For a property in unincorporated Pima County, outside any incorporated city or town, Pima County Development Services is the AHJ instead, reachable at (520) 724-9000, with permits filed online through the county's Permit Gateway. If you are not sure which one applies to your address, that is worth confirming before you assume either office covers your job.
What happens if you skip the permit
Unpermitted plumbing work can complicate a home sale, since a buyer's inspector or lender may flag it, may not be covered by homeowners insurance if it causes water damage, and skips the inspection that confirms the work meets current plumbing code. A licensed contractor pulling the permit and scheduling inspection is part of what you are paying for, not paperwork overhead, and it protects you if the work is ever questioned later.
Frequently asked questions
Do I need a permit to replace my water heater in Tucson?
Typically, yes. Water heater replacement is commonly permitted work in both the City of Tucson and unincorporated Pima County. A licensed plumber usually pulls this permit as part of the job, confirm it is included in your written estimate.
How do I know if my address is Tucson or unincorporated Pima County?
If you are unsure, contact the City of Tucson Planning and Development Services Department at (520) 791-5550 or Pima County Development Services at (520) 724-9000. Either office can tell you which jurisdiction covers your address, or your plumber should already know.
How much does a plumbing permit cost in Tucson?
Fees vary by job type and are set by whichever office has jurisdiction over your address. Contact the City of Tucson Planning and Development Services Department or Pima County Development Services directly for the current fee schedule rather than assuming a flat number.