Listed 62 days ago · June 2, 2026 | MLS# ML82049530
$1,215/sqft -28% vs Portola Valley avg
What this means: Priced below the Portola Valley per-sqft average. Compare to recent sales below for context.
Est. $24,486/moP&I $20,174 · Tax $4,050 · Insurance $262 · HOA $0Assumes 20% down ($777,600) at 6.75% · Contact Timothy for a lender referralAegis Luxury Real Estate is a licensed California real estate brokerage (DRE# 01328224) and is not a mortgage lender, mortgage broker, or loan originator. The figures shown are estimates for general reference only and do not constitute a loan offer, pre-approval, pre-qualification, or commitment to lend. Estimates use the applicable county average property tax rate of 1.25% of home price annually. Actual rates, payments, taxes, and insurance vary by lender and borrower qualifications. Contact Timothy for a referral to one of our preferred lending partners.
Active listing in Portola Valley, Santa Clara County. Convenient access to schools, parks, and Bay Area employment centers.
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4 Bed / 3 Bath / 3,200 sqft on 46,470 sqft Lot
Spec sheet at a glance. See full details below for interior, exterior, and lot features.
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Listed at $3.9M vs City Average $5.7M
$1,215/sqft compared to Portola Valley avg $1,676/sqft (-27.5%).
Best fit forActive BuyersPortola Valley SearchersMove-Up / Move-In
About This Home
Welcome to 310 Old Spanish Trail in Portola Valley, a beautifully maintained custom home built in 2006 and lovingly cared for by its original owner. With gleaming floors, soaring ceilings, and expansive windows framing the natural landscape, the home feels remarkably fresh and almost brand new.
Set in one of the Bay Area's most desirable communities, this property offers a rare combination of privacy, tranquility, and value. The scenic drive through Portola Valley's rolling hills leads to a setting that feels secluded, yet is minutes from restaurants, shops, and conveniences.
Designed for modern living, every room is generously sized with high ceilings and abundant natural light. Expansive decks stretch across the rear of the home, creating seamless indoor/outdoor living with peaceful tree views. The decks connect directly to a high-end gourmet kitchen, making the home ideal for entertaining.
The living, family, and dining rooms are stunning, featuring dramatic windows, beautiful finishes, and an exceptional open layout. In addition to four bedrooms, including a spacious primary suite, the home offers a dedicated office and a huge unfinished bonus room not included in the stated square footage (450 sq ft), providing excellent potential for expansion, recreation, or storage.
MLS ID #ML82049530, Costantini Team. Listing provided by Compass · MLSListings Inc.
Interested in 310 Old Spanish TRL?
Get a personalized analysis with comp data, offer strategy, and neighborhood context.
AlpineUplandsLosTrancos in Portola Valley, California (94028) continues to attract significant buyer interest. 310 Old Spanish TRL, a 4-bedroom single-family home with 3,200 square feet of living space, is listed for $3,888,000. The surrounding market reflects strong demand for properties in this price segment.
4-Bedroom Homes for Sale in Portola Valley 94028
Browse 4-bedroom single-family home listings in the AlpineUplandsLosTrancos area of Portola Valley. Properties in 94028 are currently averaging $1,676 per square foot with 41 days on market.
What to Expect When Buying in AlpineUplandsLosTrancos
The AlpineUplandsLosTrancos market in Portola Valley features a mix of single-family home properties ranging from starter homes to luxury estates. Current inventory levels suggest moderate conditions for buyers in this area.
Listed at $3,888,000 ($1,215/sqft). Portola Valley avg is $1,676/sqft, placing this 27.5% below. Comparable recent sales help frame the value.
Listed 62 days (as of June 2, 2026). Portola Valley average is 41 days.
Est. $24,486/mo with 20% down ($777,600) at 6.75%. Includes principal & interest ($20,174), property tax ($4,050), and insurance ($262). HOA: None. Aegis Luxury Real Estate is a licensed California real estate brokerage (DRE# 01328224) and is not a mortgage lender, mortgage broker, or loan originator. The figures shown are estimates for general reference only and do not constitute a loan offer, pre-approval, pre-qualification, or commitment to lend. Estimates use the applicable county average property tax rate of 1.25% of home price annually. Actual rates, payments, taxes, and insurance vary by lender and borrower qualifications. Contact Timothy for a referral to one of our preferred lending partners.
There are 13 active listings in Portola Valley (2 are 4-bedroom). At $3,888,000 this is positioned against the city average of $5,669,308. Similar homes have sold at 97.3% of asking.
4-bedroom homes in Portola Valley (94028) are currently averaging $1,676 per square foot. Market activity shows homes spending an average of 41 days on market in this area.
310 Old Spanish TRL in Portola Valley is currently listed at $3,888,000. This 4-bedroom, 3-bathroom single-family home is located in the AlpineUplandsLosTrancos area.
The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListings™ MLS system. Real estate listings held by brokerage firms other than Aegis Luxury Real Estate are marked with the Internet Data Exchange icon (a stylized house) and detailed information about them includes the names of the listing brokers and listing agents.
Based on information from the MLSListings MLS as of Aug 3, 2026 7:00 PM PT. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
These statistics are generated using information from the MLSListings Inc. multiple listing service, but have not been verified and are not guaranteed. MLSListings Inc. disclaims any responsibility for the accuracy and reliability of these statistics. This information should not be relied upon for real estate transaction decisions.
Data updated every 15 minutes. Visit www.MLSListings.com for more information.
Information provided is for general informational purposes only. Equal Housing Opportunity. If you are currently working with a real estate agent, this is not intended as a solicitation.
Timothy Alston, Broker, DRE# 01328224, Aegis Luxury Real Estate, 10080 N. Wolfe Rd Ste SW3-200, Cupertino CA 95014. (408) 207-4593.
Last updated: Aug 3, 2026 7:00 PM PT | Source: MLSListings Inc.
All content on this page is the property of Aegis Luxury Real Estate (DRE# 01328224). Automated scraping, downloading, or republication is strictly prohibited.
310 Old Spanish TRL$3,888,0004 bd · 3 ba · 3,200 sqft
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