Portola Valley Accessory Dwelling Unit (ADU) Standards
New laws were recently passed, and updates will be coming soon
INFORMATION | |
Contact |
Arly Cassidy, Associate Planner |
Website | |
ADU Ordinance | |
STANDARDS | |
Zones allowed |
All residential zones |
Lot restrictions |
None |
Minimum lot size |
None |
Min / Max ADU size |
Min: None Max for External ADUs: 1,200 sf Max for Internal ADUs: 1,700 sf |
ADU building height |
28 feet |
Setbacks |
Varies depending on zoning district and size of the parcel
|
Parking requirements |
Internal ADUs: None
External ADUs: One parking spot is required but may be shared with primary unit on parcels 1 acre or greater. Tandem parking and parking in setbacks are allowed.
|
Owner occupancy |
Owner must live in the main dwelling or the ADU. Short-term rentals are not allowed. |
Sample fees from recently built projects* |
ADU 1(800 sf, detached): $14,048 |
Other requirements |
|
Process |
There are three review levels:
Making an appointment to meet with a planner in the initial stages of the project can help avoid challenges and is highly recommended. |
Exceptions |
Some parcels under 1 acre may not qualify for ADUs based on location and fire safety requirements. |
Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.
*Fees are specific to each project and will vary. Fees change regularly. These are provided as examples only.
Download ADU Standards PDF
Updated: 12/11/2017