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.

Archives: FAQs

Step 3. Submit a Building Plan Check Request

Projects utilizing the Pre-Approved ADU Plans can only submit via electronic plan check. Pre-Approved ADU plans qualify as Tier 2 Projects and are eligible for Planning and Building concurrent review. Click here to request an electronic plan review for a new Pre-Approved ADU. Please allow up to 3 business days for staff to process your request … Continued

Tier 1 Projects

Residential and Non-Residential Additions less than 2,500 sq. ft. (anything over 2,500 sq. ft. requires Development Project Review) Residential & Non-Residential Façade Modifications New Single Family Dwelling Unit New Accessory Dwelling Unit/Junior Accessory Dwelling Unit New Landscape Projects greater than 500 sq. ft. and Rehabilitated Landscape Projects Greater than 2,500 sq. ft. Residential Front Yard … Continued

Do I have to provide parking for an ADU? Am I exempt from parking?

For ADUs, one parking space is required for newly constructed units unless the unit is: Within 1/2 mile of public transit. Created within the area of an existing building. In a historic district. Not offered an on-street parking permit when one is required. On the same block as a car share. A studio unit. No … Continued

What types of ADUs are there?

There are generally two types of  ADUs: Conversion of existing permitted space, including an accessory structure or a portion of the existing primary residence into an ADU A new attached or detached ADU  

Can I have more than one ADU or JADU on a property?

Up to one ADU and one JADU per lot developed with a single-family residence. Up to eight detached ADUs are allowed on properties with multifamily units, not to exceed the total number of primary units, and up to 25% of the existing units in the multifamily building through conversion of existing non-habitable space. JADUs are … Continued

Can I build an ADU on the side of my house or in the front yard?

Attached ADU – An attached ADU can be built on any side of the house, but all required setbacks apply. Detached ADU – A detached ADU is generally constructed behind the primary residence, however due to existing conditions and site constraints, they may be permitted in other areas provided all development standards are met.

Close window