City Hall Holiday Closure

Santa Ana City Hall is closed December 25, 2025, to January 2, 2026; there is no street sweeping December 24-26 and January 1. Go here to see all service impacts.  

What is an Accessory Dwelling Unit (ADU)?

An Accessory Dwelling Unit or ADU is an attached or detached residential dwelling unit that provides complete independent living facilities for one or more persons, is located on a parcel in conjunction with a proposed or existing principal residence and includes permanent provisions for living, sleeping, eating, cooking, and sanitation. An ADU may also include an efficiency unit or a manufactured home.

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