This home's estimate is 2.6% lower than the average sale price ($4.56M) of 4 comparable homes.
Search- Overview
- Sale & tax history
- Property details
- Neighborhood
- Climate
3909 ALPINE Rd, Portola Valley, CA 94028
About this home
COUNTRY WESTERN, SPACIOUS VERSATILE FLOOR PLAN. PRIVATE SETTING. TWO STORY RANCH & SEPARATE GUEST HOUSE + HORSE FACILITY. HOME OFFICE & BONUS ROOMS. PALO ALTO SCHOOLS, TWO WAGON WHEELS IN FAMILY ROOM EXCLUDED. ICE MAKER EXCLUDED.

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Market trends in 94028, CA
Last updated August 2026
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Provided by Redfin
Sale history for 3909 ALPINE Rd
$432/sq ft
$432/sq ft
$432/sq ft
Tax history for 3909 ALPINE Rd
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
- Public record
- Permits
Work on a residence.
Addition
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
- Parking Information
- Garage (Minimum): 2
- Garage (Maximum): 2
- Parking Description: Detached, Guest/Visitor Parking, RV/Boat Parking
- Garage Spaces: 2
Interior
- Bedroom Information
- # of Bedrooms (Minimum): 3
- # of Bedrooms (Maximum): 3
- Bedrooms: 2+ Primary Suites/Retreats, Ground Floor Bedroom
- Bathroom Information
- # of Baths (Full): 2
- # of Baths (Minimum): 2
- # of Baths (Maximum): 2
- Bathroom Description: Tubs, 2+ Stall Shower
- Room Information
- Guest House, Guest Quarters, Separate Unit/Apartment, Storage
- Family Room Description: Separate Family Room, Kitchen/Family Room Combo
- Dining Room Description: No Formal Dining Room, Dining Area in Family Room
- Kitchen Description: Garbage Disposal, Hookups (Gas)
- Guest House
- Interior Features
- Laundry: In Laundry Room
- Flooring: Tile, Carpet (Wall-to-Wall), Vinyl/Linoleum
- Fireplace Information
- Fireplace Description: In Family Room, In Living Room, Wood-Burning, Free-Standing, Gas Starter, Fireplace Available
- Heating & Cooling Information
- Heating: Heating (2+ Zones), Forced Air, Gas
Exterior
- Exterior Features
- View: Local/Neighborhood
- Roof: Wood Shakes/Shingles, Shake
- Yard/Grounds: Patio(s), Sprinkler(s) (Front), Barbecue Area, Deck
- Building Information
- Style: Ranch
- Subclass: Single Family Home
- Building Type: Detached
- Exterior: Wood, Stucco
- Concrete Perimeter
- Building Height (Minimum): 2
- Building Height (Maximum): 2
- Property Features
- Amenities: High Ceiling, BBQ (Indoor), Vaulted Ceiling, Wet Bar
- Communication: TV Antenna
- Living Sq. Ft.: 3,000
- Security Features: Security Fence
- Property Information
- Horse Property: Possible
- Level (Street/Main): 2 or more Master Suites, Bedroom(s)
- Property Primary ID: 539475
- Lot Information
- Lot Description: Grade (Sloped Up)
- Lot Size Area Minimum Units: Acres
- Lot Size Area Maximum Units: Acres
- Zoning: R1
Financial
- Tax/Assessment Information
- City Transfer Tax: Yes
Utilities
- Utility Information
- Energy Features: Insulation (Unknown)
- Sewer Septic: Septic Tank/Pump
- Water Information
- Water: Storage Tank, Public
Location
- Multi-Unit Information
- # of Stories: 2
- School Information
- Elementary School District: Palo Alto Unified
- High School District: Palo Alto Unified
Public facts
- Beds: 3
- Baths: 2.0
- Sq. Ft.: 2,981
- Stories: 2.0
- Lot Size: 1 acres
- Style: Single Family Residential
- Year Built: 1971
- Year Renovated: 1971
- County: Santa Clara County
- APN: 18234051
Around this home
Schools
Public K-5 • Assigned • 3.3mi
Public 6-8 • Assigned • 4.2mi
Public 9-12 • Assigned • 3.9mi
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
Minimal risk of a flood reaching the building in the next 30 years
0.31% chance of being in a wildfire in next 30 years
5 days above 94° expected this year, 10 days in 30 years
Minimal risk of severe winds over next 30 years
12 unhealthy days expected this year, 12 days in 30 years
Sun exposure
In this area, properties receive around 10.7 hours in June and 5 hours in December, placing it above the U.S. average for solar exposure.
Nearby similar homes
New listings for sale in 94028
Home values near 3909 ALPINE Rd
| Address | Redfin Estimate |
|---|---|
3 Beds | 3 Baths | 2156 Sq. Ft. | $4,847,514 |
3 Beds | 2 Baths | 2196 Sq. Ft. | $3,267,424 |
| Address | Redfin Estimate |
|---|---|
4 Beds | 3 Baths | 2301 Sq. Ft. | $3,215,174 |
3 Beds | 3 Baths | 1560 Sq. Ft. | $3,348,828 |
| Address | Redfin Estimate |
|---|---|
3 Beds | 4 Baths | 5134 Sq. Ft. | $6,583,456 |
4 Beds | 3 Baths | 3197 Sq. Ft. | $4,124,255 |
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