RCW 43.22A.110: Local government installation application and permit requirements.

Any local government manufactured or mobile home installation application and permit shall state either the name and registration number of the contractor or licensed manufactured home dealer or the certification identification number of the certified manufactured home installer supervising such installation. A local government may not issue final approval for the installation of a manufactured home unless the certified installer or the installer's agent has posted at the set-up site the manufactured home installer's certification number and has identified the work being performed on the manufactured home installation on a form prescribed by the department.