Open House 3/21 1pm - 4pm
21 Valley Oak Street
Portola Valley, CA, 94028 $ 3,499,000
Bedrooms4 Baths3.1 Sq 3,470 Monthly Estimate*
$ 21,544
Listed by Intero Real Estate Services
for $3,499,000 with 4 bedrooms and 3 full baths, 1 half bath. This 3,470 square foot home was built in 1988 on a lot size of 0.5961.
Escape to serenity in this very private 4-bedroom, 3.5-bathroom retreat priced at $3,499,000. Spanning 3,470 square feet on a 25,966 SF lot, this 1988-built residence blends timeless elegance with modern sophistication. The light-filled interior boasts soaring ceilings, large windows, new paint, and lighting throughout, creating an inviting open-concept layout ideal for both grand entertaining and tranquil living. A gourmet kitchen, featuring stainless steel appliances flows seamlessly into spacious living and dining areas. The private primary suite offers a luxurious, spa-inspired ensuite, creating a serene haven. Outside, the beautifully landscaped lot, enveloped by Portola Valley's iconic oaks, provides a secluded oasis for relaxation or outdoor gatherings. Enjoy an excellent community of neighbors and access to top-rated schools, including Ormondale Elementary, Corte Madera Middle, and Woodside High School (buyer to verify eligibility).Perfectly positioned to get away from the lights of the city while remaining close to Silicon Valley's tech hubs, scenic trails, and Roberts Market, this home offers unmatched privacy and convenience. Seize this rare opportunity to own a slice of Portola Valleys idyllic lifestyle!
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Open House
3/21/2026 1:00 PM - 4:00 PM
3/22/2026 1:00 PM - 4:00 PM
2:00 PM - 4:00 PM
21 Valley Oak Street Portola Valley, CA
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm
FeaturesGeneralLiving Area 3470
Sewer Public Sewer
Heating Central
Cooling Central Air
Roof Composition Tar/Gravel
Zoning PC2ASD
HOA Fee 590
Garage Spaces 0
Year Built 1988
Property Subtype Single Family Residence
Assoc Fee Paid Per Monthly
County San Mateo
New Construction false
Property Type Residential
Association Amenities Spa/Hot Tub
HOA true
Attached Garage false
Garage Y/N false
Full Baths 3
Special Listing Conditions Standard
Status Active
Directions Cross Street: Los Trancos
High School Woodside
City Portola Valley
Association Name Portola Valley Ranch Association
High School District Other
MLS Area 699 - Not Defined
Lot Size Units Square Feet
Lot Size Square Feet 25966
Carport Spaces 2
Carport Y/N true
Elementary School Other
Property Attached Y/N false
Middle/Junior High School Other
Virtual Tour https://www.21valleyoakst.com/unbranded https://www.21valleyoakst.com/branded
Standard Status Active
Occupancy Type Vacant
Year Built Source Assessor
Property Sub Type Additional Single Family Residence
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InteriorFireplace Features Gas Starter
Total Stories 2
Common Walls No Common Walls
Air Conditioning Y/N true
Heating Y/N true
Fireplace Y/N true
Half Baths 1
Total Bedrooms 4
Total Baths 4
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ExteriorParking Features Carport Guest
Water Source Public
Total Parking 2
Lot Size Area 25966
Foundation Details Concrete Perimeter
Lot Size Acres 0.5961
Lot Size Source Assessor
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* Excluded FeaturesList ByIntero Real Estate ServicesBroker
nathan@nahouraii.comEmail
Affordability Calculator
- Monthly Principal & Interest
- $21,544
- Monthly Property Taxes
- --
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Portola Valley, CA
Average List Price $5,603,568
Percent of Sale Price 60%
About Portola Valley, CA 4,610 Population
2% Since 2002
$ 202,393 Median Income
54.01 Median Age
22% Households with Children
Trends Information provided by ATTOM Data Solutions.
4799700 Elementary School
3409025 Middle School
Woodside High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 3/9/2026 | $3,499,000 | | Listed Price |