City of Santa Ana pre-approved ADU plans
The pre-approved ADU plans City of Santa Ana publishes, copied as published, with a link to the official page and the date A-du last checked it.
Pre-approved ADU plans
City of Santa Ana
10 plans in the index·10 on A-du Build
A-du last checked the official page on November 2, 2026.
The plans
Price on claim
Build $219k to $375k
Price on claim
Build $237k to $406k
Price on claim
Build $175k to $299k
Price on claim
Build $175k to $299k
Price on claim
Build $237k to $406k
Price on claim
Build $175k to $299k
Price on claim
Build $140k to $239k
Price on claim
Build $140k to $239k
Price on claim
Build $140k to $239k
Price on claim
Build $262k to $449k
A-du is not affiliated with HCD or any city or county. This page copies what each agency publishes about its pre-approved ADU plans and links to the official page. Check the agency's page before you rely on anything here. Nothing on this page is legal advice.
Each plan as the agency publishes it
The details below are copied from the agency’s own pages, field by field, with the date A-du last checked each plan.
One Bedroom Contemporary Style (625 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plan – 1 Bedroom Contemporary (625 s.f.)
- Size:
- One Bedroom Contemporary Style (625 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
One Bedroom Craftsman Style (677 s.f.) / James Gartner & Associates
- Description:
- Pre-Approved ADU Plan-JGA, 1 Bedroom Craftsman (677 s.f.)
- Size:
- One Bedroom Craftsman Style (677 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- James Gartner & Associates
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
One Bedroom Ranch Style (499 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plans – 1 Bedroom Ranch/Spanish/Traditional (499 s.f.)
- Size:
- One Bedroom Ranch Style (499 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
One Bedroom Spanish Style (499 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plans – 1 Bedroom Ranch/Spanish/Traditional (499 s.f.)
- Size:
- One Bedroom Spanish Style (499 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
One Bedroom Spanish Style (677 s.f.) / James Gartner & Associates
- Description:
- Pre-Approved ADU Plan- JGA, 1 Bedroom Spanish Style (677 s.f.)
- Size:
- One Bedroom Spanish Style (677 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- James Gartner & Associates
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
One Bedroom Traditional Style (499 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plans – 1 Bedroom Ranch/Spanish/Traditional (499 s.f.)
- Size:
- One Bedroom Traditional Style (499 s.f.)
- Bedrooms:
- One Bedroom
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Studio Ranch Style (399 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plan – Studio Ranch/Spanish/Traditional (399 s.f.)
- Size:
- Studio Ranch Style (399 s.f.)
- Bedrooms:
- Studio
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Studio Spanish Style (399 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plan – Studio Ranch/Spanish/Traditional (399 s.f.)
- Size:
- Studio Spanish Style (399 s.f.)
- Bedrooms:
- Studio
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Studio Traditional Style (399 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plan – Studio Ranch/Spanish/Traditional (399 s.f.)
- Size:
- Studio Traditional Style (399 s.f.)
- Bedrooms:
- Studio
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Two Bedroom Contemporary Style (749 s.f.) / Design Path Studio
- Description:
- Pre-Approved ADU Plan – 2 Bedroom Contemporary (749 s.f.)
- Size:
- Two Bedroom Contemporary Style (749 s.f.)
- Bedrooms:
- Two Bedroom
- Designer:
- Design Path Studio
- Status:
- No status label on the agency page
The agency page says: “The Pre-Approved ADU plans available are to be used for the development of a detached ADU. Projects utilizing the Pre-Approved ADU plan sets must meet grading permit exemption requirements.”
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Getting a plan permitted
A pre-approved plan still needs a building permit for your lot. For free plans published by a California city or county, you can request an optional flat-fee service, Permitting by Chris Koss, AIA. Chris Koss, AIA, a California-licensed architect who owns A-du, provides this permitting service personally under a separate written agreement with you (the Permitting Services Agreement). It is not performed by A-du, and A-du takes no part of his fee. You can always take a free plan straight to your building department instead. Open any plan on A-du Build to see what applies to it.
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