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Do I need a permit to replace a water heater in Arizona?
Source: Arizona Plumbing Help (arizonaplumbinghelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.
Arizona cities do not agree. Some exempt replacement by a licensed contractor, some exempt like for like replacement, and some always require a permit.
| City | Rule | Source |
|---|---|---|
| Phoenix | No permit if a licensed contractor replaces it (one and two family homes). | (source: City of Phoenix Planning and Development) checked November 2, 2026 |
| Glendale | No permit if a licensed contractor installs it (residential). | (source: City of Glendale Building Safety) checked November 2, 2026 |
| Mesa | No permit for like for like of equal or lesser rating; permit to switch to tankless gas. | (source: City of Mesa Development Services) checked November 2, 2026 |
| Chandler | Like for like residential replacement exempt. | (source: City of Chandler Development Services) checked November 2, 2026 |
| Surprise | Same size, type and method exempt if the old one was permitted. | (source: City of Surprise) checked November 2, 2026 |
| Tucson | Permit and inspection required, even for same type and size. | (source: City of Tucson Planning and Development Services) checked November 2, 2026 |
| Scottsdale | Plumbing permit required for water heater replacement. | (source: City of Scottsdale Planning and Development) checked November 2, 2026 |
| Gilbert | No permit for equal or lesser rated gas or electric replacements installed by an Arizona licensed contractor; tankless not included. | (source: Town of Gilbert) checked November 2, 2026 |
| Goodyear | No permit for like for like residential replacements installed by a contractor. | (source: City of Goodyear Development Services) checked November 2, 2026 |
| Flagstaff | Permit required to replace regulated plumbing systems; no like for like exemption. | (source: City of Flagstaff) checked November 2, 2026 |
| Yuma | Plumbing work generally needs a permit; no exemption list published. | (source: City of Yuma) checked November 2, 2026 |
Where a permit is required, the under $1,000 handyman exemption does not apply. Use a licensed contractor or do it yourself as an owner. (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)
Advertising rule: a person without a contractor license who uses any form of advertising to the public must include the words "not a licensed contractor" in the ad, or the under $1,000 exemption does not apply (A.R.S. 32-1121(A)(14)(c)). If the job needs a local building permit, the exemption does not apply at all (A.R.S. 32-1121(A)(14)(a)). (source: Arizona State Legislature)
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
Sources
- City of Phoenix Planning and Development: Work Exempt from Permit (PBCC Section 105.2, PDF) (checked November 2, 2026)
- City of Glendale Building Safety: Building Permits Q and A (checked November 2, 2026)
- City of Mesa Development Services: Residential Construction Frequently Asked Questions (checked November 2, 2026)
- City of Chandler Development Services: Homeowner Building Permit Manual (rev. 4/09/26, PDF) (checked November 2, 2026)
- City of Surprise: Local Amendments to the 2024 International Codes (effective January 1, 2026, PDF) (checked November 2, 2026)
- City of Tucson Planning and Development Services: Do I Need a Permit? (Exemptions) (checked November 2, 2026)
- City of Scottsdale Planning and Development: Permit Services (checked November 2, 2026)
- Town of Gilbert: Technical Codes of the Town of Gilbert, 2020 Edition (2018 Code Amendments, PDF) (checked November 2, 2026)
- City of Goodyear Development Services: Homeowner Info (Homeowner Permit FAQs) (checked November 2, 2026)
- City of Flagstaff: When is a building permit needed? (PDF, 2018) (checked November 2, 2026)
- City of Yuma: Building Permits (checked November 2, 2026)
- Arizona State Legislature (Arizona Revised Statutes): A.R.S. 32-1121 (persons not required to be licensed) (checked November 2, 2026)
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