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Gilbert plumbing permits and rules

Source: Arizona Plumbing Help (arizonaplumbinghelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

Plumbing permits in Gilbert

Gilbert exempts replacement gas water heaters of equal or less BTU rating and electric water heaters of equal or less amperage or voltage rating from permits, when installed by an Arizona licensed contractor. Tankless systems are not included, and the units must be listed and labeled by a nationally recognized testing agency. (source: Town of Gilbert)

Gilbert Development Services: (480) 503-6700. Applications go through Gilbert's One Stop Shop. Gilbert says its draft 2024 code amendments are not adopted yet (coming January 2027). (source: Town of Gilbert Development Services)

Statewide rules that apply here

Plumbing contractors in Arizona must hold a contractor license from the Registrar of Contractors unless an exemption applies (A.R.S. 32-1151). Check the license and its classification on ROC's contractor search before you hire. (source: Arizona State Legislature)

A person without a contractor license may do a job under $1,000 in total (labor, materials and everything else) only if the work is casual or minor (A.R.S. 32-1121(A)(14)). The exemption does not apply when the work needs a local building permit (A.R.S. 32-1121(A)(14)(a)), when the job is part of a larger operation or split into smaller contracts (A.R.S. 32-1121(A)(14)(b)), or when the person uses any advertising to the public that does not include the words "not a licensed contractor" (A.R.S. 32-1121(A)(14)(c)). (source: Arizona State Legislature)

The under $1,000 exemption never covers work that connects to natural gas, propane or other petroleum or gaseous fuel, including installing, maintaining or repairing appliances, or fire safety work such as hardwired or interconnected smoke alarms and fire sprinklers (A.R.S. 32-1121(D)). So an unlicensed handyman may not swap a gas water heater or gas furnace, even for under $1,000. An owner doing their own work under the owner exemption is a separate rule. (source: Arizona State Legislature)

See water heater rules in other cities, doing your own work and checking a contractor.

Other cities: Phoenix · Tucson · Mesa · Chandler · Scottsdale · Glendale · Surprise · Flagstaff · Gilbert · Goodyear · Yuma

On this site: Do I need a permit to replace a water heater in Arizona? · Tankless water heater permits in Arizona · Gas line permits in Arizona cities · Plumbing jobs that need no permit in Arizona cities · Can I do my own plumbing in Arizona? · When does an Arizona contractor need a license? · Arizona contractor contract rules · How to check an Arizona contractor and complain · The Arizona Residential Contractors' Recovery Fund · Cities · FAQ · Sources

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