Sold on May 2026
$3,262,000
4
bd
3.5 ba
3,470
sq ft

21 Valley Oak St, Portola Valley, CA 94028

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About this home

Single-familyProperty Type
1988Year Built
0.6 acresLot Size
$940Price/Sq.Ft.
$590/moHOA Dues
Listed by Nathan Nahouraii DRE #01394651 Intero Real Estate Services
Contact: 408-209-9556
Bought with Lisa Keith DRE #00882247 Golden Gate Sotheby's International Realty
Redfin checked: a minute ago
Source:MLSListings #ML82031869
Listing provided courtesy of MLSListings Inc. (MLSListings)

Redfin Estimate

$4,406,158
$1.1M since sold in May 2026$74K since August

This home's estimate is 7% higher than the average sale price ($4.12M) of 5 comparable homes.

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Market trends in 94028, CA

Homeowner tools

Sale and tax history for 21 Valley Oak St

Public record

Beds
4
Baths
3.5
Stories
2
Lot width
Lot depth
Lot size
0.6 Acres
Year renovated
Sq. Ft.
3,470
Year built
1988
Style
Single Family Residential
County
San Mateo County
APN
080490060
Parking Spaces
Basement
Accessible
HOA Dues
Garage
Features
Last updated by owner on Sep 2, 2026.

Property details

Around this home

Schools

Corte Madera School

Public 4-8 • Assigned • 0.5mi

10/10
Woodside High School

Public 9-12 • Assigned • 5.6mi

8/10
Provided by GreatSchools

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.62% chance of being in a wildfire in next 30 years

2/10 Heat Factor

7 days above 94° expected this year, 14 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Portola Valley, CA • 94028
Average low and high temperatures (°F)
61
43
62
45
69
48
68
47
73
50
78
53
77
54
83
56
80
57
76
53
63
47
59
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Sun exposure

26/ 100

Low sunlight

Sunscore

There appears to be significant shading by surrounding buildings, terrain, and vegetation.

4.2 hrs
0.5 hr
JuneDecember
Provided by Shadowmap
Estimated sale price
$4.19M – $5.07M

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Property information provided by MLSListings when last listed in 2026. This data may not match public records. Learn more.
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GreatSchools Ratings provided by GreatSchools.org.