ADU Update: Early Lessons and Impacts of California's State and Local Policy Changes

December 2017

By: University of California, Berkeley
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Accessory Dwelling Units

This briefing paper summarizes the early effects of state statute amendments in California related to accessory dwelling units (ADUs). It explains why the state took action to preempt aspects of local control, reports on local permit increases following changes to state statutes, and highlights remaining barriers to ADU construction in California.