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Tankless water heater permits in Arizona
Source: Arizona Plumbing Help (arizonaplumbinghelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.
Tucson: a tankless (on demand) water heater needs a permit and detailed plans, because of higher fuel or power demands. (source: City of Tucson Planning and Development Services)
Mesa: replacing a storage gas water heater with a tankless or on demand gas water heater needs a permit. (source: City of Mesa Development Services)
Surprise exempts only replacements of the same type and method of operation, so a change to tankless is not covered. (source: City of Surprise)
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 Tucson Planning and Development Services: Do I Need a Permit? (Exemptions) (checked November 2, 2026)
- City of Mesa Development Services: Residential Construction Frequently Asked Questions (checked November 2, 2026)
- City of Surprise: Local Amendments to the 2024 International Codes (effective January 1, 2026, PDF) (checked November 2, 2026)
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