What is an ADU?
An accessory dwelling unit (ADU) is a smaller, independent residential dwelling unit located on the same lot as a stand-alone (i.e., detached) single-family home. ADUs go by many different names throughout the U.S., including accessory apartments, secondary suites, and granny flats. (Source: American Planning Association)
How much will it cost to use a pre-approved ADU plan? Anyone can use a pre-approved ADU plan in Port Orchard at no cost, as long as no modifications are made. This means you won’t need to pay an architect to use the pre-approved designs.
The City has provided an estimate outlining the permitting costs for the 600-square-foot ADU model. Please note that this estimate does not include utility connection fees.
Permit costs for larger ADU models will be slightly higher, while smaller models will cost slightly less. Final permit fees will be calculated at the time of payment.
Have a Question about Permitting a Pre-approved ADU? If you have questions about permitting a pre-approved ADU or would like to discuss your property’s suitability for the program, please contact the Department of Community Development and ask to speak with a Planner. You can also email your questions and a planner will respond.
📞 Phone: 360-874-5533
📧 Email: planning@portorchardwa.gov
To begin the building permit application process for a pre-approved ADU, visit the City’s Online Permitting Portal under the section titled “Begin an Application Process Online.”
