Land Use & Zoning

In California, what is an 'accessory dwelling unit' (ADU)?

AA commercial unit attached to a residential building
BA secondary, smaller residential unit on the same lot as a primary single-family or multifamily dwelling, permitted under California state law to address housing needs✓ Correct
CA detached garage converted to an office
DA guest house that cannot be rented

Explanation

ADUs (sometimes called granny flats, in-law units, or secondary units) are secondary residential units on a lot with a primary dwelling. California has enacted laws requiring local governments to allow ADUs to help address the housing crisis. They can be attached, detached, or converted from existing space.

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