Arizona licenses plumbing through the Registrar of Contractors. R-37 is the residential plumbing classification, including water and gas piping and fixtures. CR-37 is the dual classification when commercial plumbing is included. Tucson requires a permit for a water heater, including a replacement, and for new plumbing piping. Ask which Registrar number will be on the permit. This page shows which Tucson plumbers AI assistants named most often across answers RecommendRadar ran and stored, how often each appeared, and the sources those answers cited. Visibility to AI isn't the same as a passed inspection. Ask for the license and a written price.
3 snapshot runs from the last 45 days named a business. This page is indexed after 3 such runs. Names that differ by case, punctuation, a leading The, a practice suffix, or a shortened firm name are combined.
Before you contact anyone on this list
- Ask which license covers this job and match it to the price.
- Ask who will pull the building permit.
- Get a written quote before work starts.
FAQ
Which Arizona license covers plumbing?
The Registrar of Contractors lists R-37 Plumbing for residential work and CR-37 when the license also covers commercial plumbing. Gas piping is inside the R-37 scope.
Does replacing a water heater in Tucson need a permit?
Yes. Planning and Development Services lists water heater installation, including replacements, as work the owner or contractor permits.
Which Tucson plumbers did AI name most?
Al Coronado Plumbing (3 of 3), Cal’s Plumbing (3 of 3), Code Blue Plumbing (3 of 3), Jobe & Sons Plumbing (2 of 3), Cummings Plumbing (1 of 3)
How this page works
Every name, count, and source on this page comes from answers RecommendRadar ran and stored for the best plumber in Tucson, AZ. Nothing is added or edited by hand. These stored answers came from Perplexity. Sample: 3 stored answers from the last 45 days, refreshed October 28, 2026. AI answers vary with wording, time, location, and engine, so this is a dated sample of what those engines said, not an endorsement or a ranking of quality.