City of La Mesa pre-approved ADU plans
The pre-approved ADU plans City of La Mesa publishes, copied as published, with a link to the official page and the date A-du last checked it.
Official page: https://www.cityoflamesa.gov/1821/Accessory-Dwelling-Units (A-du last checked it October 19, 2026).
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.
The plans
Plan A
- Description:
- Plan A - 224 SQFT - Studio
- Size:
- 224 SQFT - Studio
- Bedrooms:
- 0
- Designer:
- Not named on the agency page
- Status:
- No status label on the agency page
The agency page says: “Please email Planning@cityoflamesa.gov to get the official construction permitting set for the one you choose.”
Listed on the agency page when A-du checked it on October 19, 2026.
Plan B
- Description:
- Plan B - 400 SQFT - One Bedroom
- Size:
- 400 SQFT - One Bedroom
- Bedrooms:
- 1
- Designer:
- Not named on the agency page
- Status:
- No status label on the agency page
The agency page says: “Please email Planning@cityoflamesa.gov to get the official construction permitting set for the one you choose.”
Listed on the agency page when A-du checked it on October 19, 2026.
Plan C
- Description:
- Plan C - 499 SQFT - One Bedroom
- Size:
- 499 SQFT - One Bedroom
- Bedrooms:
- 1
- Designer:
- Not named on the agency page
- Status:
- No status label on the agency page
The agency page says: “Please email Planning@cityoflamesa.gov to get the official construction permitting set for the one you choose.”
Listed on the agency page when A-du checked it on October 19, 2026.
Plan D
- Description:
- Plan D - 990 SQFT - Two Bedroom
- Size:
- 990 SQFT - Two Bedroom
- Bedrooms:
- 2
- Designer:
- Not named on the agency page
- Status:
- No status label on the agency page
The agency page says: “Please email Planning@cityoflamesa.gov to get the official construction permitting set for the one you choose.”
Listed on the agency page when A-du checked it on October 19, 2026.
Plan E
- Description:
- Plan E - 1,199 SQFT - Three Bedroom
- Size:
- 1,199 SQFT - Three Bedroom
- Bedrooms:
- 3
- Designer:
- Not named on the agency page
- Status:
- No status label on the agency page
The agency page says: “Please email Planning@cityoflamesa.gov to get the official construction permitting set for the one you choose.”
Listed on the agency page when A-du checked it on October 19, 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, A-du offers an optional flat-fee permitting service. It is performed by Chris Koss, AIA (California license C-39677), who owns A-du, so A-du has a financial interest in it. 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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