If your project is indoors (an interior remodel, water heater replacement, electrical work, etc.), a good place to start is with Building Safety to determine whether or not you will need a building permit. Most indoor projects do not require Planning & Zoning review, but many will require a building permit.
If your project is outdoors (a home addition, casita, shed, ramada, outdoor kitchen, etc.), start with Planning & Zoning. Planning & Zoning will be able to tell you whether what you want will be allowed, and if so what the required setbacks will be. Planning & Zoning will refer you to Building Safety to determine whether a building permit will also be required.
If you are looking to start a home-based business, start with Planning & Zoning to determine whether your business idea will be allowed to operate as a home-based business.
If you are starting from the ground up, the Town of Sahuarita highly recommends scheduling a Development Review Committee Pre-Application Meeting to discuss requirements for your project.
If your project is likely to impact only one Department, such as upgrading electrical wiring for your business, you may start by contacting Building Safety to determine permit requirements.