2) BUILDING: Are tiny homes allowed?

Yes, as of July 1, 2023 within the new code. Visit the tiny house on wheels (THOWS) webpage and view related documents and the Housing Solutions Network webinar to learn more before you build or purchase a THOW. 

Other tiny homes are typical wood framed structures with minimal square footage, constructed on a permanent foundation and in accordance with the adopted building codes can be permitted in the City of Port Townsend. Any permanent structure built needs to provide all necessary elements to qualify as an approved residence. These elements include: 

• Living space
• Means for cooking
• Sanitation
• Eating space
• Sleeping space 

Adopted Residential Code

Washington State Amendments

Alternate types of construction materials (other than wood and concrete) may be allowed if it can be proven that the materials used, and the overall design meets the requirements of the International Residential Code, the Washington Administration Code Amendments and the International Energy Conservation Code. Alternative methods and materials require an engineered design. Anyone considering this type of design on their project should contact Development Services Building Division prior to beginning design.

Minimum Room Size Requirements:  Each dwelling unit shall have at least one habitable room that is 70 square feet in area with no dimension of the room area being less than 7 feet; to include height. *Kitchens, hallways, bathrooms, mechanical rooms, etc. are not considered habitable. 

Other habitable rooms provided shall also be no less than 70 square feet, with no dimension of the room being less than 7 feet.  Sanitation shall be provided, which includes bathtub or shower, toilet, and a sink. Rooms including these elements are sized accordingly to provide the appropriate clearances.

Recreational vehicles or RV’s are only permitted in campgrounds or RV parks. To see what constitutes as an RV, please visit the Labor and Industries website.