BUILDING: When is an architect required for commercial projects?

New construction of all non-residential buildings and structures over 4,000 square feet.

New construction of all residential buildings containing more than 4 dwelling units.

Tenant improvements or remodels in spaces more than 4,000 square feet.

If the remodel or tenant improvement involves area less than 4,000 square feet AND is in a building that is 4,000 square feet or larger, then an architect must be involved if there are structural changes or life safety changes (exits, fire alarms or fire sprinklers affected, or other life safety items such as change-of-use or occupancy).

The total square feet of a building includes the total of all levels and all outdoor covered areas like porches, drive-thru canopies, etc.

The practice of architecture is defined in and regulated through RCW 18.08. Visit the Washington State Architect Guide for help in understanding the roles and responsibilities of architects, engineers, and other design professionals.

Under state law and the building code the Building official has the authority to make the final determination on what documents will be accepted for building permit application.