Building an Accessory Dwelling Unit (ADU) in Pierce County

Accessory Dwelling Unit Development

Learn about building an ADU in Pierce County, including potential benefits, local regulations and permitting requirements, and tips and tricks for your project.

 

What to know about building an ADU Your Propery

Building an ADU on your property could provide a unique and right-sized housing option for a family member or others in your community. There are multiple types of ADUs, such as detached ADUs, basement or attic ADUs, or an attached addition to your home, so you can design your project based on what makes sense for your property and lifestyle. You may also choose to rent out your ADU to generate income.

A graphic showing multiple types of additions: Detached, Detached above garage, Attached Addition, Internal Basement, Internal Attic and Detached/ w Breezeway. All of these are along an alley.

 

Where to Start

If you are considering building an ADU on your property, reviewing your municipal code on accessory dwelling units and/or checking in with your local permitting office is a great place to begin. Click on your city or jurisdiction (below) to learn more about their unique regulations and resources and to get in touch with someone who can help. 

A gray ADU with a red door surrounded by folliage