Palo Alto ADU Regulation Guide

A guide to learn more about ADU regulation and zoning in Palo Alto, CA. We are here to help you with information and knowledge for permitting an ADU in Palo Alto.

Palo Alto was established by Leland Stanford Sr. when he founded Stanford University. Today, it's one of the most desirable — and expensive — cities in the Bay Area, making ADUs an attractive option for homeowners.

Palo Alto allows ADUs up to 900 square feet on lots under 10,000 sq ft, and up to 1,200 sq ft on larger lots. The city has a streamlined approval process for ADUs that meet standard requirements.

Height limits: Detached ADUs can be up to 16 feet tall, or 18 feet with a pitched roof. Two-story ADUs may be permitted on larger lots with specific setback requirements.

Palo Alto has eliminated minimum parking requirements for ADUs, and charges reduced utility connection fees for units under 750 square feet.

ADORE Homes has completed multiple ADU projects in Palo Alto and understands the city's unique architectural review process and neighborhood guidelines.