Google street view image for 225 Alamos Rd, Portola Valley, CA 94028

Off Market Sep 1977 for $280K

$6,356,773

Est. refi paymentEst. refi $1,710/mo

•

2.5 ba

•

3,600

sq ft

225 Alamos Rd, Portola Valley, CA 94028

About this home

225 Alamos Rd is a 3,600 square foot house on a 3.4 acre lot with 4 bedrooms and 2.5 bathrooms. - it last sold on September 22, 1977 for $280,000. Based on Redfin's Portola Valley data, we estimate the home's value is $6,356,773.

Single-familyProperty Type

1958Year Built

3.4 acresLot Size

$1,766Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$6,356,773

$6.1M since sold in September 1977$1.0M since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 15.1% higher than the average sale price ($5.52M) of 5 comparable homes.

SOLD JUN 2, 2026
$5,950,000
A
4 beds3 baths3,380 sq ft
747 Westridge Dr, Portola Valley, CA 94028
SOLD AUG 21, 2026
$5,300,000
B
5 beds3 baths3,350 sq ft
147 Mapache Dr, Portola Valley, CA 94028
SOLD JUL 27, 2026
$6,130,000
C
3 beds3.5 baths3,729 sq ft
578 CRESTA VISTA Ln, Portola Valley, CA 94028
SOLD MAY 11, 2026
$4,625,000
D
3 beds3 baths3,005 sq ft
25 Cordova Ct, Portola Valley, CA 94028
SOLD JUL 16, 2026
$5,600,000
E
3 beds2 baths1,900 sq ft
365 Alamos Rd, Portola Valley, CA 94028

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Earn from this home

Sell

$6,022,042

Est. take-home

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Refinance

Est. cash available

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Rent

$3,771/mo

Redfin rental estimate

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Market trends in 94028, CA

Last updated August 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

99.2%

0.2% MoM

Median sale price

$5.0M

$748K MoM

Avg. days on market

42d

2 days MoM

Recently sold homes

1 MoM

New listings for sale

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5 beds5.5 baths3,690 sq ft
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$6,250,000
5 beds4.5 baths4,100 sq ft
2 Buck Meadow Dr, Portola Valley, CA 94028
EARLY ACCESS
$7,995,000
5 beds4 baths3,425 sq ft
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3D WALKTHROUGH
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See all

Provided by Redfin

Sale history for 225 Alamos Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,021 (+1.1%)

$106,025 + $651,412

$757,437

2024

$7,931 (+1.5%)

$103,947 + $638,640

$742,587

2023

$7,813 (+2.9%)

$101,909 + $626,118

$728,027

2022

$7,594 (+1.4%)

$99,911 + $613,842

$713,753

2021

$7,493 (+0.6%)

$97,952 + $601,806

$699,758

2020

$7,445 (+1.1%)

$96,032 + $590,006

$686,038

2019

$7,364 (+5.3%)

$95,048 + $583,957

$679,005

2018

$6,995 (+1.2%)

$93,185 + $572,507

$665,692

2017

$6,910 (+2.0%)

$89,567 + $550,277

$639,844

2016

$6,776 (+0.7%)

$89,567 + $550,277

$639,844

2015

$6,729 (+2.6%)

$87,811 + $539,488

$627,299

2014

$6,561 (+2.2%)

$84,798 + $520,976

$605,774

2012

$6,420 (+1.8%)

$84,415 + $518,622

$603,037

2011

$6,304 (+1.4%)

$82,760 + $508,453

$591,213

2010

$6,214 (−4.0%)

$81,138 + $498,484

$579,622

2009

$6,474 (+1.7%)

$80,532 + $494,759

$575,291

2008

$6,364

$80,724 + $495,935

$576,659

Tax history for 225 Alamos Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,021 (+1.1%)

$106,025 + $651,412

$757,437

2024

$7,931 (+1.5%)

$103,947 + $638,640

$742,587

2023

$7,813 (+2.9%)

$101,909 + $626,118

$728,027

2022

$7,594 (+1.4%)

$99,911 + $613,842

$713,753

2021

$7,493 (+0.6%)

$97,952 + $601,806

$699,758

2020

$7,445 (+1.1%)

$96,032 + $590,006

$686,038

2019

$7,364 (+5.3%)

$95,048 + $583,957

$679,005

2018

$6,995 (+1.2%)

$93,185 + $572,507

$665,692

2017

$6,910 (+2.0%)

$89,567 + $550,277

$639,844

2016

$6,776 (+0.7%)

$89,567 + $550,277

$639,844

2015

$6,729 (+2.6%)

$87,811 + $539,488

$627,299

2014

$6,561 (+2.2%)

$84,798 + $520,976

$605,774

2012

$6,420 (+1.8%)

$84,415 + $518,622

$603,037

2011

$6,304 (+1.4%)

$82,760 + $508,453

$591,213

2010

$6,214 (−4.0%)

$81,138 + $498,484

$579,622

2009

$6,474 (+1.7%)

$80,532 + $494,759

$575,291

2008

$6,364

$80,724 + $495,935

$576,659

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1

Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central

Room Information
# of Rooms: 12

Exterior

Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Excellent

Pool Information
Has Pool

View Information
View: Excellent

Property Information
Subdivision Name: WESTRIDGE SUB 2
Living Sq. Ft: 3,600
Ground Floor Sq. Ft: 3,600
Building Sq. Ft: 4,120
# of Stories: 1
Legal Description: LOT 25 WESTRIDGE SUB NO 2 RSM 28/37 38 39 40

Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 520
Garage / Carport Type: Attached

Lot Information
# of Buildings: 1
Land Sq. Ft: 148,164
Legal Lot Number: 25
Acres: 3.4014
Zoning Code: R1002A
County Use Description: SINGLE FAMILY

Location Information
Parcel Location Influence: Cul-De-Sac

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 2.5
Sq. Ft.: 3,600
Stories: 1.0
Lot Size: 3.4 acres
Style: Single Family Residential
Year Built: 1958
Year Renovated: 1984
County: San Mateo County
APN: 077261170

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Ormondale Elementary School

Public K-3 • Assigned • 1.6mi

10/10

Corte Madera School

Public 4-8 • Assigned • 2.0mi

10/10

Woodside High School

Public 9-12 • Assigned • 4.0mi

8/10

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)

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

$6.04M – $7.31M

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Home values near 225 Alamos Rd

Data from public records.

Address	Redfin Estimate
331 Alamos Road, Portola Valley, CA 4 Beds \| 2.5 Baths \| 2860 Sq. Ft.	$4,817,934
300 Alamos Road, Portola Valley, CA 3 Beds \| 3.5 Baths \| 2552 Sq. Ft.	$6,772,021

Address	Redfin Estimate
170 Alamos Road, Portola Valley, CA 5 Beds \| 3.5 Baths \| 4495 Sq. Ft.	$7,559,111
330 Alamos Road, Portola Valley, CA 5 Beds \| 3 Baths \| 1880 Sq. Ft.	$4,622,229

Address	Redfin Estimate
150 Alamos Road, Portola Valley, CA 4 Beds \| 3.5 Baths \| 8333 Sq. Ft.	$15,390,068
340 Alamos Road, Portola Valley, CA 4 Beds \| 2.5 Baths \| 2290 Sq. Ft.	$5,107,812

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94028, CA

Sale history for 225 Alamos Rd

Tax history for 225 Alamos Rd

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94028

Home values near 225 Alamos Rd

More real estate resources