Overview
The Humboldt County Planning and Building Department implemented a Standard Plan Program to provide the public pre-approved Accessory Dwelling Units (ADUs) construction plans. Under the Standard Plan Program, plans are either made available by the Humboldt County Planning and Building Department or by a private party. All plans have been reviewed for compliance with the 2019 California Building Standards Code. The plans owned by Humboldt County are available free of charge. Plans owned by the listed design firm may be purchased directly from the plan owner.
To get a comprehensive look at the process of developing an ADU in Humboldt County, please visit HumboldtADU.org, a hub of resources and information covering the ADU development process from start to finish.