Martin Luther King Jr. Day closure January 19

Santa Ana City Hall will be closed and there will be no street sweeping on Monday, January 19, 2026. Learn more here.

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Step 4. Prepare and Finalize Documents for E-Plan Check Review

While you wait for a response, please ensure you have all the following  documents, which are required for Pre-Approved ADU Plan submittal. Pre-Approved ADU Submittal Checklist, use this sheet as a guide to ensure your plans meet all necessary requirements for submittal. Pre-Approved ADU Application and Affidavit Hold Harmless Agreement Site Plan detailing the Pre-Approved … Continued

Tier 2 Projects

Resident interior remodels Residential patio covers Window change-outs of non-historical properties Pool and/or spa Installation of air conditioning condensers All tenant improvements not involving a change of occupancy/use Tenant improvements involving a change of occupancy/use of less than 2,500 sq. ft. and which fall under of the following uses: Professional, business, and administrative offices; Service … Continued

Step 1. Determine Eligibility

To utilize Santa Ana’s Pre-Approved ADU Plans, your property must meet the following requirements: Project site is developed or proposed to be developed with a single-family dwelling unit Not located in a flood zone (Zone A or AE) Not located in a historic district (French Park (SD-19), Downtown Historic District, and Floral Park) Not located … Continued

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