Yes, for repairs that need a permit. Mesa's code says that when equipment replacements and repairs requiring a permit must be done in an emergency, the permit application is due within the next working business day. Many small fixes, like stopping a leak or clearing a stoppage, need no permit at all.
What is Mesa's emergency repair rule?
Mesa City Code Section 4-1-4, subsection (C), is titled "Emergency Repairs." It says: "Where equipment replacements and repairs requiring a permit must be performed in an emergency situation, the permit application shall be submitted within the next working business day."
The city's Residential Construction FAQ says the same thing in shorter form. In answer to the question about an emergency repair, it tells owners, "If you need to make emergency repairs that requires a permit, submit your construction permit application by the next business day."
Read the rule closely. Three parts matter.
- The repair must require a permit. The rule is for work that would otherwise need a permit first. If your repair needs none, there is nothing to file.
- It must be an emergency. The code says "an emergency situation." It does not define the term. A burst supply pipe flooding a room fits. A slow drip you have ignored for months does not.
- The clock is one working business day. The application is due within the next working business day. If your emergency lands on a weekend or holiday, ask the city how it counts the day.
The rule lets you start the repair. It does not waive the permit, and it does not waive the inspection.
Which plumbing repairs need no permit at all?
Before you worry about the emergency rule, check the exempt list. Subsection (B)(5) of the same section lists plumbing work that does not need a permit. It includes:
- Stopping leaks in drain, water, soil, waste or vent pipe, "not including defective concealed trap, drainpipe, water, soil, waste, or vent pipe requiring removal and replacement."
- Clearing stoppages, or repairing leaks in pipes, valves or fixtures, and removing and reinstalling water closets, "not including the replacement or rearrangement of valves, pipes, or fixtures."
- Replacing an electric water heater with one of equal or less amperage in a home, along with minor changes to the connections.
- Equal replacement of the exterior potable water supply line to a building, and equal replacement of the exterior sanitary drainage line from a building. Both exclude work in a public utility easement or in City of Mesa right-of-way, and both exclude businesses the city regulates under Title 8.
- Installing an automatic hot water circulating pump that plugs into a 115-volt receptacle, in a home.
The fuel gas list in subsection (B)(3) also exempts replacing a gas water heater of equal or less Btu rating in a dwelling. It carries a condition: the serving Gas Utility must be notified before the appliance is energized.
The pattern is clear. Fixing what is already there is often exempt. Replacing or rearranging pipes, valves and fixtures is not. A pipe inside a wall that has burst and needs new material is on the permit side of the line. A clog, or a leaking fitting that can be tightened, is not.
Subsection (D) adds one more point. Mesa does not require notice for "ordinary repairs," but the code says ordinary repairs do not include "addition to, alteration of, replacement, or relocation" of water supply, sewer, drainage, gas, soil, waste or vent piping. The exception is work exempt under subsection (B). So exempt work is exempt, and other pipe replacement is not an ordinary repair.
What happens after an emergency repair?
Once you file, the ordinary process picks up. Three parts of the code matter.
Inspection. Section 4-1-5 says work for which a permit is required "shall remain accessible and exposed for inspection purposes until approved." It also says building service equipment intended to be concealed by a permanent portion of the building shall not be concealed until inspected and approved. In an emergency, that means you should not close up the wall or cover a repaired line until the city has looked at it, if the repair was one that needs a permit.
Utility connections. The same section says building service equipment regulated by the technical codes "shall not be connected to the water, fuel, or power supply, or sewer system until authorized by the Building Safety Director." The code also lets the director authorize temporary connections for testing. If a repair requires disconnecting and reconnecting equipment, ask the city how it wants that handled.
Codes. Exempt work still has to meet code. Section 4-1-4(B) says exemptions do not authorize "any work to be done in any manner in violation of the provisions of this Chapter or the technical codes." Mesa's plumbing plan checklist notes that its references follow the 2024 International Plumbing Code with Mesa amendments, and that Sections 101.4 through 115.4 of the plumbing code are deleted and replaced by the Mesa Administrative Code, which is Title 4, Chapter 1 of the city code. That is why the Mesa rule, not the model code, decides the paperwork.
What if it is a gas emergency?
Gas is different. Do not treat a gas leak as a permit question. Navien's installation manual gives the standard steps for a gas smell: do not try to light any appliance, do not touch any electrical switch, and do not use any phone in your building. Immediately call your gas supplier from a neighbor's phone and follow its instructions. If you cannot reach your gas supplier, call the fire department.
Once the danger has passed, the permit rules come back. Gas piping repairs that are not on the exempt list need a permit, and the code asks that the gas utility be notified before a gas appliance is put back in service.
What does the city not say? The code does not define "emergency." It does not list which repairs qualify. The emergency rule does not say what happens if you miss the next-business-day deadline. Do not assume a burst pipe, a failed water heater and a broken sewer line all get the same treatment, and do not assume a late application is fine.
If you are unsure, call Permit Services at 480-644-4273 on the next business day. The city's FAQ lists that number for construction permit and building code questions. Tell them what failed, what you did, and what work is still open.
Related pages: our guide to what plumbing work needs a permit in Phoenix shows how a neighboring city writes its exempt list, and the Mesa rules for going tankless show the water heater side of the same code.
What should you do first in an emergency?
Stop the damage first. Shut off the water at the fixture or at the main. If you are not sure where the shutoff is, our guide on how to shut off water to a fixture is a good place to start. Take photos of the damage and the failed part before anyone cuts anything out. Then call a licensed plumber.
HQ Plumbing and Air takes emergency calls 24/7. We are licensed and insured, and our estimates are free. Tell our dispatcher you are in Mesa, and we can help you sort out which part of the repair may need a permit.