Pre-Designed ADU Plans

COVER_ADUThe City of Shasta Lake offers Pre-Designed ADU Plans free of charge.  Six design options are available as follows:

The Pre-Designed ADU Plans undergo the standard review process, but since they have already been pre-checked, they allow for a faster review with lower fees. 

Compared to the regular ADU process, the Pre-Designed ADU Plans provide an expedited review and reduced plan check fees.  Overall, using the Pre-Designed ADU Plans should make the process more affordable for applicants. Please note, however, that the City cannot provide a construction cost estimate for the ADU.

Changes to the Pre-Designed ADU Plans will not be accepted.

  • Accessory Dwellings Units Frequently Asked Questions Handout (Coming Soon)

Application Process


Step 1: Figure out whether an ADU fits on the property 

Please submit a plot plan for your ADU.  

Step 2: Obtain the plans 

Each plan set is available above.  After you select a design option size, you must submit: (1) a wet-signed Hold Harmless and Indemnification Agreement and (2) a site plan in-person at in the Development Services office at City Hall. From there, official plan sets will be distributed via email, then applicants must get a building permit (go to step 3 below).  

Step 3: Apply for a building permit

Prior to submission for a building permit, applicants must select the desired plan set.  Submit one, full-size printed copy of your custom plan set following the project checklist. City staff will review the plans for completeness, verifying the elements of plan sheets. Once the site plan is approved, the Development Services Department will work with you to obtain a building permit.