Find a certified mobile/ manufactured home installer here.
No. A homeowner may do work on their own residence. The homeowner may have friends or family help with the installation. However, if the homeowner pays anyone to do any part of the installation work, that person must be certified.
Yes. Revised code of Washington 43.22A requires certification of manufactured home installers.
A certified installer is required to be on site at all times during each phase of installation. There may be different certified installers for each phase of installation. There is no requirement that the same certified installer supervise an installation from start to finish.
However, if two or more certified installers perform different aspects of the installation, one certification tag is required for each installer. For more information, see note below regarding tags.
Installation work requiring a certified manufactured home installer:
Installer certification is not required for licensed plumbers or electricians working within the scope of their license.
If 2 or more certified installers perform different aspects of the installation, 1 tag is required for each installer. Example: If 1 installer sets the forms and pours the concrete runners and another installer performs all other installation work, there should be 2 tags affixed to the home.
RCW 43.22 Sections 335-495 - Manufactured/mobile homes, factory-assembled structures.
RCW 43.22A - Mobile and Manufactured Home Installation.
WAC 296-150I - Manufactured Home Installer Training and Certification Program, Installation Code.
WAC 296-150M - WA Manufactured Home Code.