House Prices

House Prices & Home Values Portola Valley, CA 2026


Average Data

average house price$8,937,143
average size per house5021 ft²
average price per ft²1781 $ / ft²

04/05/2026 - The value range (VR) for house prices in Portola Valley, CA is $1908/ sqft to $1908/ sqft. An average home with 5021 sqft costs approximately $9,580,068 to $9,580,068. Portola Valley, CA includes 1 ZIP codes and it is located in San Mateo county. The lowest prices are found in ZIP 94028, while the highest are in ZIP 94028. The average price per sqare feet is $1781. Our analysis is based on 7 property listings.

Avergage prices by ZIP codes Portola Valley

940281891 $ / ft²




Historical development of home values in Portola Valley

Year Estimated value (USD) Change vs. 2025
2010 $4,150,571 -53.6%
2011 $3,990,068 -55.4%
2012 $3,979,325 -55.5%
2013 $4,128,062 -53.8%
2014 $4,333,327 -51.5%
2015 $4,555,729 -49.0%
2016 $4,793,478 -46.4%
2017 $5,052,202 -43.5%
2018 $5,331,515 -40.3%
2019 $5,578,728 -37.6%
2020 $5,867,122 -34.4%
2021 $6,673,219 -25.3%
2022 $7,779,475 -13.0%
2023 $8,203,817 -8.2%
2024 $8,678,420 -2.9%
2025 $8,937,143 0.0%

Graph: estimated home values in Portola Valley over time (USD)



Example: 100% financing house in Portola Valley

Loan amount: $8,937,143

Interest rate: 6.00%

Fixed monthly payment: $53,582.69

Breakdown in the 1st month:
Interest portion: $44,685.72  –  Principal portion: $8,896.97

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $533,243.09 $109,749.16 $8,827,393.84
2 $526,474.00 $116,518.25 $8,710,875.59
3 $519,287.41 $123,704.84 $8,587,170.74
4 $511,657.57 $131,334.69 $8,455,836.06
5 $503,557.13 $139,435.12 $8,316,400.94
6 $494,957.08 $148,035.17 $8,168,365.76
7 $485,826.59 $157,165.66 $8,011,200.10
8 $476,132.96 $166,859.29 $7,844,340.81
9 $465,841.44 $177,150.81 $7,667,190.00
10 $454,915.17 $188,077.09 $7,479,112.91
11 $443,314.99 $199,677.27 $7,279,435.64
12 $430,999.33 $211,992.93 $7,067,442.72
13 $417,924.07 $225,068.19 $6,842,374.53
14 $404,042.36 $238,949.90 $6,603,424.63
15 $389,304.45 $253,687.81 $6,349,736.83
16 $373,657.54 $269,334.71 $6,080,402.11
17 $357,045.56 $285,946.69 $5,794,455.42
18 $339,409.00 $303,583.26 $5,490,872.17
19 $320,684.65 $322,307.61 $5,168,564.56
20 $300,805.42 $342,186.83 $4,826,377.73
21 $279,700.08 $363,292.17 $4,463,085.56
22 $257,293.02 $385,699.24 $4,077,386.32
23 $233,503.93 $409,488.32 $3,667,898.00
24 $208,247.59 $434,744.66 $3,233,153.34
25 $181,433.49 $461,558.76 $2,771,594.57
26 $152,965.55 $490,026.70 $2,281,567.87
27 $122,741.78 $520,250.47 $1,761,317.40
28 $90,653.87 $552,338.38 $1,208,979.02
29 $56,586.85 $586,405.41 $622,573.61
30 $20,418.64 $622,573.61 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Portola Valley, CA


1500 sqft3900 sqft
Ø selling price$3,232,516$6,876,442
Ø fast selling$2,938,651$6,188,797
Ø high price sale$3,526,381$7,564,086

In 2026, houses in Portola Valley, CA will be offered at an average price of $1781 per square foot. A 1,500 sqft home priced at $3,232,516 is 22.79% more expensive per square foot than a 3,900 sqft home priced at $6,876,442. Home prices in Portola Valley, CA vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $4,760,613. Sellers who can wait longer may achieve a higher price of up to $5,818,528.


Portola Valley, CA

Nature, Lifestyle, and Real Estate

Nestled in the foothills of the Santa Cruz Mountains, Portola Valley, CA offers a serene, nature-first lifestyle near the heart of Silicon Valley. This small town in San Mateo County is known for its expansive open space, low-density neighborhoods, and scenic vistas along Alpine Road and Portola Road.
Outdoor enthusiasts love Windy Hill Open Space Preserve and Coal Creek Preserve, where miles of trails invite hiking, biking, and equestrian adventures year-round. The community values sustainability and dark-sky policies, preserving rural character while maintaining access to top-tier amenities and tech hubs. Families are drawn by strong public schools in the Portola Valley School District and proximity to Stanford University, Menlo Park, and Woodside.

Real estate in Portola Valley features custom estates and contemporary homes on large lots, with prices reflecting its privacy, safety, and coveted 94028 ZIP code. Local dining and services cluster around Ladera, Nathhorst Triangle, and nearby Sand Hill Road, offering convenient options without sacrificing tranquility.
Commuters benefit from quick connections to I-280, Caltrain stations in Menlo Park and Palo Alto, and SFO and SJC airports for regional and international travel. With a Mediterranean climate of warm, dry summers and mild winters, residents enjoy outdoor living, farmers markets, and community events at the Town Center. Whether you seek luxury real estate, top schools, or world-class trails, Portola Valley, California delivers an unmatched balance of privacy, nature, and connectivity.



FAQ – Home Values in Portola Valley

What is the median home value in Portola Valley in 2026?

In 2026, the typical home value in Portola Valley is about $8,937,143 for an average home size of 5021 square feet. This corresponds to an average price of roughly $1781 per square foot.

What is the average cost per square foot in Portola Valley?

In 2026, homes in Portola Valley sell for an average of around $1781 per square foot, with a typical range between $1908 and $1908 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Portola Valley is about 5021 square feet, with an estimated 2026 value around $8,937,143.



Locations close to Portola Valley, CA

Millbrae, CA819 $ / ft²
Montara, CA738 $ / ft²
Moss Beach, CA843 $ / ft²
Atherton, CA1306 $ / ft²
Menlo Park, CA1341 $ / ft²
Los Altos, CA2268 $ / ft²
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