(1) If a certified installer obtains the manufactured home installation or placement permit from the local enforcement agency, the certified installer shall ensure that all required installation inspections, relative to the work performed by the certified installer, are completed.

(2) Installer certification requirements do not eliminate any requirements of chapter 18.27 RCW to become a registered contractor.

(3) An out-of-state mobile/manufactured home dealer who performs the set-up, installation, or repair work must be an active registered contractor. The mobile/manufactured home dealer must employ at least one certified installer to supervise the installation.