- 1 bd
- 1 ba
- 570 sqft

The average Portola Valley, CA home value is $4,325,642, up 12.1% over the past year. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $4,325,642
1-Year Value Change: +12.1%
(Data through September 30, 2026)
Zillow is more than a place to browse homes. It’s a place to connect with a local agent, explore financing solutions, schedule home tours, understand your buying and selling power, and more.
The median home value in Portola Valley, CA is $4,325,642 as of September 2026. This represents a 1.5% increase compared to last month and a 12.1% increase year-over-year.
Home values in Portola Valley, CA have increased by 1.5% month-over-month and 12.1% year-over-year.
The median home value in Portola Valley, CA ($4,325,642) compares to: San Mateo County ($1,579,058), California ($761,538), and the U.S. national median ($366,157).