County Standard ADU Building Plans

To see if you live in one of the unincorporated communities where our
fee waiver program and pre-approved plans may be used, please click here.

County standard ADU plan types are arranged by square footage and layout. Please download and review all associated documents with each plan set, and use the included checklist to be sure all steps are completed prior to starting the plan review process.


Floorplan Options

 

Documents

 

PLAN A

1200 SQFT - 3 BEDROOM, 1 BATH

ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE
PLAN B

1200 SQFT - 2 BEDROOM, 1 BATH

ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE
PLAN C

1200 SQFT - 2 BEDROOM, 2 BATH

ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE
PLAN D

1000 SQFT - 1 BEDROOM, 1.5 BATH

ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE
PLAN E

800 SQFT - 1 BEDROOM, 1 BATH

ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE
PLAN F

600 SQFT - 1 BEDROOM, 1 BATH
ADU Letter (required)
ADU Checklist (required)
ADU Checklist Guidance
36" x 24" PDF
17" x 11" PDF
2004 CAD FILE
2010 CAD FILE