Take the Training and Pass the Exam

The Mobile/Manufactured Home Installer Training Course is a comprehensive course held over 1 and one-half days including a 2-hour examination. Courses are held a minimum of 4 times throughout the year. See the 2014 training schedule below.

About the examination

The certification examination is given at the end of the second day of training. It is an open-book examination covering material addressed in the installer training course.

A score of 70% or higher is required for certification. Applicants receiving a passing grade on the examination will become certified Washington State manufactured home installers. An installer certification license will be issued.

Auditing the training course

Anyone may attend the training class without taking the examination for certification. “Training Only” is offered at a reduced cost and attendees receive a certificate of attendance. This option is particularly useful for individuals who would like specific knowledge about installation but do not need certification.


Manufactured/Mobile Home Installer Training/Examination Schedule (All classes will be held at the local Labor & Industries office unless otherwise noted.)
Class Dates Location Class Times Application Cutoff Date
March 8 – 9, 2016 Tumwater office Day 1: 8 a.m. to 5 p.m.
Day 2: 8 a.m. to noon
March 1, 2016
March 29 – 30, 2016

DSHS Building 8517 E Trent Ave. Spokane, WA

Day 1: 8 a.m. to 5 p.m.
Day 2: 8 a.m. to noon
March 21, 2016
May 10 – 11, 2016

L&I Mt Vernon Office

L&I Office 525 E College W. Suite H, Mt. Vernon, WA 98273
Day 1: 8 a.m. to 5 p.m.
Day 2: 8 a.m. to noon
May 2, 2016
October 18 – 19, 2016 Yakima local office Day 1: 8 a.m. to 5 p.m.
Day 2: 8 a.m. to noon
October 10, 2016


Note: Day 1 consists of registration sign-in, issuance of installer training manual, and training. Day 2 consists of training completion and a 2-hour exam.

Application and payment must be received no later than the cutoff date for the class requested. Applications received after the cutoff date may be scheduled for the next available class due to time and/or class size limitations.

For more information:

RCW 43.22 Sections 335-495 - Manufactured/mobile homes, factory-assembled structures. (apps.leg.wa.gov)
RCW 43.22A - Mobile and Manufactured Home Installation. (apps.leg.wa.gov)
WAC 296-150I - Manufactured Home Installer Training and Certification Program, Installation Code. (apps.leg.wa.gov)
WAC 296-150M - WA Manufactured Home Code. (apps.leg.wa.gov)