Reducing Regulation Expands ADU Construction in California

May 27, 2021  

Reducing Regulation Expands ADU Construction in California

The In Depth section on HUD User’s Regulatory Barriers Clearinghouse (RBC) takes a closer look at innovative state and local strategies, activities, and plans to mitigate the impacts of regulations on the development of affordable housing. Each In Depth article highlights a particular plan, ordinance, or strategy in the RBC database and elaborates on aspects such as the approval process, stakeholder participation, and the progress made in reducing regulatory barriers.

The most recent In Depth article focuses on California’s efforts to expand the development of accessory dwelling units (ADUs). ADUs increase density through low-cost infill construction on existing properties and offer affordable rental rates. California began revising its state-level ADU regulations in 2016 and 2017, but local cities and counties could still impose their own rules. In 2019, however, California’s legislature enacted new laws limiting how much local jurisdictions can regulate ADUs. The reforms have fostered an increase in ADU construction.

Visit HUD User’s RBC In Depth page to learn more about accessory dwelling unit regulations in California and other initiatives that state and local governments have enacted to reduce impediments to affordable housing.