4109 Alpine Rd is a 2,301 square foot house on a 2 acre lot with 4 bedrooms and 3 bathrooms. - it last sold on August 18, 1994 for $555,000. Based on Redfin's Portola Valley data, we estimate the home's value is $3,215,174.
Single-familyProperty Type
1950Year Built
2 acresLot Size
$1,397Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$3,215,174
$2.7M since sold in August 1994$79K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 36% lower than the average sale price ($5.03M) of 4 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Nov 16, 2023 • Final
Construction
Install a tankless water heater in the attic.
Plumbing
Water heater
Jun 6, 2023 • Final
Development permit request (building, grading, and drainage permit)
Relocate a new tankless water heater into the attic.
Plumbing
Water heater
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
Interior
Room Information
# of Rooms: 8
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: U-Shape
Construction Type: Wood
Building Construction Quality: Average
Roof Framing Type: Wood
Property Information
Subdivision Name: KLEIN
Living Sq. Ft: 2,301
Ground Floor Sq. Ft: 2,221
Building Sq. Ft: 2,301
# of Stories: 1
Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 638
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 87,120
Municipality Name: PALO ALTO UNIFIED
Acres: 2
Zoning Code: HS
County Use Description: RESID SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Tax Area: PALO ALTO UNIFIED
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,301
Stories: 1.0
Lot Size: 2 acres
Style: Single Family Residential
Year Built: 1950
Year Renovated: 1950
County: Santa Clara County
APN: 18236045
Home facts updated by county records on Aug 21, 2026
Around this home
Schools
Lucille M. Nixon Elementary School
Public K-5 • Assigned • 3.3mi
10/10
Ellen Fletcher Middle
Public 6-8 • Assigned • 4.2mi
9/10
Henry M. Gunn High School
Public 9-12 • Assigned • 3.9mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
2/10 Heat Factor
5 days above 94° expected this year, 10 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
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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
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.
10.7 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.06M – $3.70M
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