Mobile and manufactured homes require similar but sometimes different requirements than traditional houses and buildings. Since mobile and modular homes are designed and built in a factory, Washington State's Department of Labor and Industries (L&I) is responsible for the review and inspections of these buildings.
When placing these types of buildings in Snohomish County, PDS is responsible for the land and foundation portions only. Any interior alternations to the existing structure is regulated by L&I. Any additions added to the external structure is regulated by PDS.