PDFWAC 296-150F-0420
Who can be authorized to approve design plans?
(1) A professional engineer, architect, or firm licensed by the state of Washington according to the Engineers Registration Act, chapter 18.43 RCW and/or the Architects Registration Act, chapter 18.08 RCW; or
(2) A professional engineer, architect, or firm licensed in another state that has licensing or certification requirements that meet or exceed Washington requirements;
(3) A professional engineer, architect, or firm who designs and certifies that the factory-built home or commercial structure design meets state requirements cannot also approve the design plan in the plan approval process;
(4) A professional engineer, architect, or firm cannot approve those electrical designs listed in WAC 296-150F-0310(2); and
(5) A professional engineer, architect, or firm cannot approve plans submitted for multistate approval under a reciprocal agreement.