Arizona, Santa Cruz County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Santa Cruz County Building & Safety Division

Santa Cruz County, Arizona, regulates construction within its unincorporated areas through its Building Department, which operates under the Building & Safety Division. The county has adopted the 2012 International Building Codes, which became effective for all construction in these areas on September 1, 2013. The Building Code is designed to protect public safety, health, and welfare by overseeing the use, occupancy, location, and quality of materials in construction through plan reviews and inspections. The department serves builders, developers, and homeowners in the unincorporated areas and also provides services to cities through intergovernmental agreements.

Unincorporated Areas and Plumbing Permits

Plumbing permits are required for any installation, alteration, repair, or replacement of plumbing, gas, or drainage piping, as well as fixtures or water heating/treatment equipment, unless specifically exempted by the California Plumbing Code or county ordinance.
Exemptions from plumbing permits include stopping leaks in drains, soil, waste, or vent pipes; clearing stoppages; and repairing leaks in pipes, valves, or fixtures that do not involve replacement or rearrangement.
A plumbing permit is specifically required for the replacement of a water heater.
Most plumbing permits can be applied for through the EZ Permit system, which allows for online applications for qualifying projects. Some in-person appointments are also available for EZ Permits.
For projects not eligible for EZ Permits, a more detailed plan review process is required. This includes submitting site plans, floor plans, foundation plans, and electrical, plumbing, and mechanical plans, which must include a panel schedule.
A grading permit is also required for any grading exceeding 50 cubic yards and is typically included with the building permit.

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Arizona, including Santa Cruz County.

Arizona Plumbing Legislation, Codes, and Guidelines

Plumbing Code Adoption in Arizona

Arizona does not have a single, mandatory statewide plumbing code. Historically, legislation was enacted to create a state-level commission and mandate a uniform code, but those provisions were subsequently repealed. Consequently, the adoption and enforcement of plumbing standards are delegated to local jurisdictions, such as cities, towns, and counties.

Because there is no statewide mandate, local municipalities have the authority to adopt and amend their own plumbing regulations. Many jurisdictions in Arizona choose to base their local codes on nationally recognized model codes, most commonly the International Plumbing Code (IPC) or the Uniform Plumbing Code (UPC). Because these codes are adopted at the local level, the specific edition (e.g., 2018, 2021, or 2024) and any local amendments can vary significantly from one city or county to another.

Regulatory Oversight and Licensing

While the adoption of technical plumbing codes is local, the regulation of plumbing contractors is handled at the state level by the Arizona Registrar of Contractors (ROC). The ROC is responsible for licensing and regulating contractors to ensure they meet professional standards. While the ROC does not dictate the specific technical plumbing code used by a city, licensed contractors are required to adhere to the codes and ordinances adopted by the local jurisdiction where the work is being performed.

Resources to Learn More

Select a City in Santa Cruz County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

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