City of Laguna Niguel pre-approved ADU plans
The pre-approved ADU plans City of Laguna Niguel 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 Laguna Niguel
3 plans in the index·3 on A-du Build
A-du last checked the official page on November 2, 2026.
The plans
Free plan
Build $122k to $210k
Free plan
Build $186k to $319k
Free plan
Build $265k to $454k
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.
Plan 1
- Size:
- Studio w/ 1 Bath (350 SF)
- Bedrooms:
- Studio
- Bathrooms:
- 1
- Designer:
- RRM Design Group
- Status:
- No status label on the agency page
- Code cycle:
- 2025 CALIFORNIA RESIDENTIAL CODE (plan title sheet)
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Plan 2
- Size:
- 1 Bed w/ 1 Bath (532 SF)
- Bedrooms:
- 1
- Bathrooms:
- 1
- Designer:
- RRM Design Group
- Status:
- No status label on the agency page
- Code cycle:
- 2025 CALIFORNIA RESIDENTIAL CODE (plan title sheet)
Agency page for this planSee it on A-du Build
Listed on the agency page when A-du checked it on November 2, 2026.
Plan 3
- Size:
- 2 Bed w/ 1 Bath (757 SF)
- Bedrooms:
- 2
- Bathrooms:
- 1
- Designer:
- RRM Design Group
- Status:
- No status label on the agency page
- Code cycle:
- 2025 CALIFORNIA RESIDENTIAL CODE (plan title sheet)
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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