Table of Contents

• ADUs/JADUs AND THEIR BENEFITS
• QUICK OVERVIEW: TOWN ADU REQUIREMENTS
• QUICK OVERVIEW: HOW TO BUILD AN ADU/JADU IN TOWN
• FREQUENTLY ASKED QUESTIONS 
• CONTACT INFORMATION AND ADDITIONAL RESOURCES
• TAKE THE SURVEY ( BY JANUARY 18, 2023 )

CONTACT INFORMATION AND ADDITIONAL RESOURCES

Town of Portola Valley Planning & Building Department

765 Portola Road, Portola Valley, CA  94028

Building & Planning permit counter hours: M-F: 8 am to 12 pm

650-851-1700

For virtual appointments: http://www.portolavalley.net/virtualappointment

Portola Valley

• ADU Ordinance: https://library.municode.com/ca/portola_valley/codes/code_of_ordinances?nodeId=TIT18ZO_CH18.36USPEALDI_18.36.040ACUS
• Planning and Building department: https://www.portolavalley.net/departments/planning-building-department

San Mateo County

• Second Unit Resources Center: https://secondunitcentersmc.org/
• Second Unit Inspiration: https://secondunitcentersmc.org/wp-content/uploads/ADU-Idea-Book-FINAL-ONLINE-VERSION.pdf
• Second Unit Workbook: https://secondunitcentersmc.org/wp-content/uploads/Second-Unit-Workbook-FINAL-ONLINE.pdf
• Assessor : https://www.smcacre.org/assessor/accessory-dwelling-unit

California Department of Housing and Community Development

• Accessory Dwelling Unit Handbook (updated July, 2022): https://www.hcd.ca.gov/sites/default/files/2022-07/ADUHandbookUpdate.pdf
• Frequently Asked Questions About JADUs: https://www.hcd.ca.gov/policy-research/docs/faqsadujr.pdf

21 Elements

• Second Units and Junior Second Units: http://www.21elements.com/second-units