This Custom House was built in 2005/06 and was originally designed as a 5br/4.5ba/3car-garage/FR/DR/LR/ and with the option to have an attached (with separate entrance) in-law unit (ADU) of approximately 4,500sqft. on over one acre. Seller has also furnished another preliminary plan sited for a separate ADU at the lower portion of the lot that would need an additional approval from the appropriate authorities. Seller at "buyers option" will complete any of the unfinished areas ‘"upon mutual agreement" as to the finishes best suited for them. Pictures of the the unfinished Rooms have been "Virtually Staged"
Property Details
Price:
$3,990,000
MLS #:
ML81992906
Status:
Active
Beds:
3
Baths:
3
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
699notdefined
Listed Date:
Jul 24, 2025
Finished Sq Ft:
3,200
Lot Size:
46,475 sqft / 1.07 acres (approx)
Year Built:
2006
See this Listing
Schools
School District:
Other
Elementary School:
Other
Middle School:
Other
Interior
Appliances
Dishwasher, Range Hood, Ice Maker, Refrigerator
Bathrooms
2 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Wood, Tile
Heating
Fireplace(s)
Laundry Features
Gas Dryer Hookup
Exterior
Architectural Style
Ranch
Construction Materials
Concrete, Steel, Stucco
Parking Features
Guest, Off Street
Parking Spots
1.00
Roof
Composition, Shingle
Financial
Map
Community
- Address310 Old Spanish Trail Portola Valley CA
- Neighborhood699 – Not Defined
- CityPortola Valley
- CountySan Mateo
- Zip Code94028
Market Summary
Current real estate data for Single Family in Portola Valley as of Oct 21, 2025
20
Single Family Listed
270
Avg DOM
1,573
Avg $ / SqFt
$8,614,550
Avg List Price
Property Summary
- 310 Old Spanish Trail Portola Valley CA is a Single Family for sale in Portola Valley, CA, 94028. It is listed for $3,990,000 and features 3 beds, 3 baths, and has approximately 3,200 square feet of living space, and was originally constructed in 2006. The current price per square foot is $1,247. The average price per square foot for Single Family listings in Portola Valley is $1,573. The average listing price for Single Family in Portola Valley is $8,614,550.
Similar Listings Nearby
Courtesy of Terrace Associates. Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the California Regional Multiple Listing Service. Detailed information about real estate listings held by brokerage firms other than include the name of the listing broker. Neither the listing company nor shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2025. California Regional Multiple Listing Service. All rights reserved.310 Old Spanish Trail
Portola Valley, CA