Plumbing services in Phoenix: what each job involves and costs

Each page below explains how the job works, what drives the price, what Phoenix and Arizona require, and which questions to ask before you sign. Every cost figure is labeled with its source and year.

• Water heater repair and installation: tank, tankless and heat pump costs, typical lifespans, why Phoenix treats a licensed replacement differently from a DIY swap, and why gas connections always need a licensed contractor in Arizona.
• Drain cleaning: costs by fixture, snaking versus hydro jetting, and what Phoenix Water Services says causes most sewer blockages.
• Leak detection and slab leaks: how to test for a hidden leak with your meter, what slab leak detection and repair cost, and when a leak repair turns into permitted work.
• Sewer line repair: who owns which part of the sewer in Phoenix, camera inspections, trenchless lining and pipe bursting costs, and the right license types.
• Emergency plumbing costs: after-hours rates, typical emergency repair prices, and Phoenix's 72-hour permit rule for emergency repairs.
• Emergency checklist: the first steps for a burst pipe, a gas smell or a sewer backup, with the official numbers to call.

These are national figures from established cost guides. Phoenix quotes may be higher or lower depending on access, slab construction, materials and permits.

Phoenix publishes a list of work exempt from permit under section 105.2 of the Phoenix Building Construction Code. For plumbing, it exempts stopping leaks in drain, water, soil, waste or vent pipe, clearing stoppages, repairing leaks that do not require replacing or rearranging valves, pipes or fixtures, and replacing fixtures with compliant new ones. A permit is required to relocate any valves, pipes or fixtures, and if a concealed trap or pipe has to be removed and replaced, that counts as new work that needs a permit.

Two more rules matter for homeowners. Replacing an existing water heater in a one- or two-family home is exempt only when a licensed contractor does it. And ordinary repairs that involve replacing or relocating water supply, sewer, drainage, gas, soil, waste or vent piping are not exempt. In an emergency, work that needs a permit can start first, but the permit application must be submitted within 72 hours.

The city's residential projects page also lists gas line modifications and moving or adding sinks, toilets and tubs among projects that need a permit. Other Valley cities set their own rules, so check with your city if you live outside Phoenix. Our locations section covers eight nearby cities.

The Arizona Registrar of Contractors licenses businesses by classification. Its license classification list includes R-37 (plumbing, including solar) and R-37R (plumbing) for residential work, CR-37 as a dual residential and commercial plumbing license, and C-37 for commercial plumbing. For main sewer and drain lines, it lists A-12 and CR-80 (sewers, drains and pipe laying). Water conditioning equipment such as softeners falls under C-54 and R-54. When you check a license, make sure the classification fits the job, not just that the license is active.

We do not perform plumbing work, we have no technicians and we do not quote prices. To reach a plumber, call one of the licensed contractors listed on this page or see all listed contractors. Questions about this guide or a correction: email hello@plumberphoenixpros.com. We do not take service requests and do not pass messages on to contractors. Any contract, price and warranty is between you and the contractor you hire. Email replies are guidance only.

If water is actively leaking or you smell gas, do not wait for an email reply. Follow the emergency checklist and call the utility or 911.