Off Market Jun 2024 for $4.5M

$5,798,415

Est. refi paymentEst. refi $20,370/mo

•

4,200

sq ft

100 Alamos Rd, Portola Valley, CA 94028

About this home

An incredible lot of over 2.5 acres offers tremendous possibilities and plays host to this spacious home with spectacular views towards Felt Lake and the Western Hills. Highlights include 2 fireplaces, large gathering spaces, the kitchen with appliances from brands including Viking, a flexible-use room perfect for a gym or office, and numerous glass doors opening to the grounds for a true indoor/outdoor lifestyle. A guest house offers comfortable, modern living space for friends or extended family, while sweeping grounds take full advantage of Portola Valley's verdant beauty and provide peaceful venues for entertaining or play. Adding the finishing touch is a great location close to numerous nature preserves, a 5-minute drive from the shops and restaurants of Ladera Country Shopper, within 1.5 miles of Interstate 280, and with access to highly sought-after Portola Valley schools (buyer to verify eligibility).

Single-familyProperty Type

1953Year Built

2.54 acresLot Size

$1,381Est. Price/Sq.Ft.

Listed by DeLeon DeLeon Team •DRE #70010006 • Deleon Realty

Contact: 650-900-7000

Bought with Karen Fryling •DRE #01326725 • Intero Real Estate Services

Bought with Rebecca Johnson •DRE #01332193 • Intero Real Estate Services

Redfin checked: a minute ago

•Source:MLSListings #ML81957969

Redfin Estimate

$5,798,415

$1.3M since sold in June 2024$43K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.2% higher than the average sale price ($5.46M) of 5 comparable homes.

SOLD JUL 27, 2026
$6,130,000
A
3 beds3.5 baths3,729 sq ft
578 CRESTA VISTA Ln, 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 DEC 19, 2025
$5,300,000
C
4 beds3.5 baths4,297 sq ft
415 Golden Oak Dr, Portola Valley, CA 94028
SOLD JUN 2, 2026
$5,950,000
D
4 beds3 baths3,380 sq ft
747 Westridge Dr, Portola Valley, CA 94028
SOLD MAY 11, 2026
$4,625,000
E
3 beds3 baths3,005 sq ft
25 Cordova Ct, Portola Valley, CA 94028

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Earn from this home

Sell

$2,041,998

Est. take-home

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Refinance

Est. cash available

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Rent

$3,667/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

OPEN SAT, 2PM TO 4PM
$4,150,000
5 beds2.5 baths2,660 sq ft
30 Minoca Rd, Portola Valley, CA 94028
OPEN SUN, 2PM TO 4PM
$3,795,000
4 beds3 baths2,290 sq ft
220 Canyon Dr, Portola Valley, CA 94028
OPEN SUN, 1:30PM TO 4:30PM
$7,995,000
5 beds5.5 baths3,690 sq ft
160 Fawn Ln, Portola Valley, CA 94028
OPEN SAT, 2PM TO 4PM
$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
1080 Westridge Dr, Portola Valley, CA 94028
3D WALKTHROUGH
$3,998,000
3 beds4 baths6,155 sq ft
55 Vista Verde Way, Portola Valley, CA 94028
OPEN SAT, 2PM TO 4PM
$3,498,000
3 beds2 baths2,420 sq ft
45 Bear Paw, Portola Valley, CA 94028
See all

Provided by Redfin

Sale history for 100 Alamos Rd

Date

Event

Price

MLSListings #ML81957969

Jun 14, 2024

Sold

$4,500,000

$1,071/sq ft

May 13, 2024

Pending

—

May 7, 2024

Contingent

—

Apr 8, 2024

Price Changed

$4,988,000

$1,188/sq ft

Mar 18, 2024

Listed

$5,788,000

$1,378/sq ft

MLSListings #ML81737488

Aug 20, 2019

Sold

$4,500,000

$1,071/sq ft

Jul 21, 2019

Pending

—

Feb 3, 2019

Listed

$4,900,000

$1,167/sq ft

Great opportunity to build on this 2.5 acre site in the sought after Westridge community, with views toward Felt Lake and the Western Hills. The main residence has 3 bedrooms, 2 baths. There is a 1-bedroom/1 bath guest house (610SF), carport, and 2-stall barn. Portola Valley school district. Pool is empty. Sport court has cracks and failing fence. Availability to connect to the sewer. Per the Portola Valley Data Report AMFA is 7,285 --85% of the AMFA = 6,192 SF (for main residence) Adjusted Maximum impervious are (AMIS) is 12, 344. Buyer to confirm with Town of PV.

Public Records

Oct 30, 2014

Sold

$3,750,000

$893/sq ft

Public Records

Dec 10, 1970

Sold

$80,000

$19/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$50,275 (−5.8%)

$4,343,670 + $338,130

$4,681,800

2024

$53,360 (+1.5%)

$4,258,500 + $331,500

$4,590,000

2023

$52,579 (+2.8%)

$4,664,078 + $160,829

$4,824,907

2022

$51,127 (+1.3%)

$4,572,626 + $157,676

$4,730,302

2021

$50,457 (+0.4%)

$4,482,967 + $154,585

$4,637,552

2020

$50,257 (+10.3%)

$4,395,066 + $151,554

$4,546,620

2019

$45,584 (+5.2%)

$4,350,000 + $150,000

$4,500,000

2018

$43,332 (+1.2%)

$3,517,681 + $522,532

$4,040,213

2017

$42,824 (+1.8%)

$3,381,086 + $502,243

$3,883,329

2016

$42,075 (+0.7%)

$3,381,086 + $502,243

$3,883,329

2015

$41,790 (+779.6%)

$3,314,791 + $492,396

$3,807,187

2014

$4,751 (+4.4%)

$70,023 + $316,879

$386,902

2012

$4,550 (+1.7%)

$69,707 + $315,447

$385,154

2011

$4,476 (+1.3%)

$68,341 + $309,262

$377,603

2010

$4,418 (+4.7%)

$67,001 + $303,199

$370,200

2009

$4,219 (+1.7%)

$66,501 + $300,933

$367,434

2008

$4,149

$66,659 + $301,648

$368,307

Tax history for 100 Alamos Rd

Year

Property tax

Land + Additions

Assessment*

2025

$50,275 (−5.8%)

$4,343,670 + $338,130

$4,681,800

2024

$53,360 (+1.5%)

$4,258,500 + $331,500

$4,590,000

2023

$52,579 (+2.8%)

$4,664,078 + $160,829

$4,824,907

2022

$51,127 (+1.3%)

$4,572,626 + $157,676

$4,730,302

2021

$50,457 (+0.4%)

$4,482,967 + $154,585

$4,637,552

2020

$50,257 (+10.3%)

$4,395,066 + $151,554

$4,546,620

2019

$45,584 (+5.2%)

$4,350,000 + $150,000

$4,500,000

2018

$43,332 (+1.2%)

$3,517,681 + $522,532

$4,040,213

2017

$42,824 (+1.8%)

$3,381,086 + $502,243

$3,883,329

2016

$42,075 (+0.7%)

$3,381,086 + $502,243

$3,883,329

2015

$41,790 (+779.6%)

$3,314,791 + $492,396

$3,807,187

2014

$4,751 (+4.4%)

$70,023 + $316,879

$386,902

2012

$4,550 (+1.7%)

$69,707 + $315,447

$385,154

2011

$4,476 (+1.3%)

$68,341 + $309,262

$377,603

2010

$4,418 (+4.7%)

$67,001 + $303,199

$370,200

2009

$4,219 (+1.7%)

$66,501 + $300,933

$367,434

2008

$4,149

$66,659 + $301,648

$368,307

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

Public record

Beds

Baths

3.5

Stories

Lot width

—

Lot depth

—

Lot size

110,642

Year renovated

2026

Sq. Ft.

4,200

Year built

1953

Style

Single Family Residential

County

San Mateo County

APN

077271100

Parking Spaces

Basement

Accessible

Yes

HOA Dues

$10 /month

Garage

Yes

Features

Views, Green, Pool

Last updated by owner on Jul 12, 2026.

Property details

Parking

Parking Information
Carport (Minimum): 2
Parking Description: Covered Parking, Drive Through, On Street, Room for Oversized Vehicle

Interior

Virtual Tour

Bedroom Information
# of Bedrooms (Minimum): 4
# of Bedrooms (Maximum): 4
Bedrooms: Ground Floor Bedroom, More than One Bedroom on Ground Floor, Primary Bedroom on Ground Floor, Primary Suite/Retreat, Walk-In Closet

Bathroom Information
# of Baths (Full): 3
Bathroom Description: Dual Flush Toilet, Full on Ground Floor, Outside Access, Jack & Jill, Primary (Stall Shower(s)), Shower Over Tub, Stall Shower, 2+ Stall Shower, Tile

Room Information
Bonus/Hobby Room, Utility Room, Workshop
Family Room Description: Separate Family Room
Dining Room Description: Breakfast Bar, Dining Area, Dining Bar
Kitchen Description: Cooktop (Electric), Countertop (Granite), Countertop (Tile), Dishwasher, Freezer, Garbage Disposal, Hood Over Range, Island with Sink, Microwave, Oven (Built-In), Oven (Double), Oven (Electric), Oven (Gas), Oven Range (Gas), Refrigerator(s)
Guest House

Interior Features
Laundry: Dryer, Electricity Hookup (110V), Electricity Hookup (220V), Inside, Tub/Sink, Washer
Flooring: Carpet, Hardwood, Tile

Fireplace Information
Has Fireplace
Fireplace Description: In Family Room, In Living Room, Wood-Burning
Fireplaces (Minimum): 2

Heating & Cooling Information
Heating: Baseboard, Central Forced Air, Fireplace

Exterior

Exterior Features
View: Forest/Woods, Hills, Mountains
Fencing: Mixed Height/Type, Wood
Roof: Composition, Shingle
Yard/Grounds: Backyard, Deck, Other (See Remarks)

Building Information
Subclass: Single Family Home
Building Type: Detached
Construction Type: Wood
Concrete Perimeter

Property Features
Amenities: Open Beam Ceiling, Walk-In Closet, Wet Bar
Living Sq. Ft.: 4,200
Special Features: Wide Halls/Doors (3 Ft.+)

Property Information
Property Primary ID: 601181

Lot Information
Lot Acres: 2.504
Lot Description: Grade (Hillside)
Lot Size Area Minimum Units: Sq. Ft.
Lot Size Area Maximum Units: Sq. Ft.
Lot Size Source: Assessor
Zoning: R1002A

Utilities

Utility Information
Energy Features: Low Flow Toilet
Sewer Septic: Septic Connected
Utilities: Individual Electric Meters, Individual Gas Meters, Public Utilities

Water Information
Water: Individual Water Meter, Irrigation Connected, Public

Location

School Information
Elementary School: Ormondale Elementary
Elementary School District: Portola Valley Elementary
Middle School: Corte Madera Elementary
High School District: Sequoia Union High

Public facts

Beds: 4
Baths: 3.5
Sq. Ft.: 4,200
Stories: 1.0
Parking Spaces: 0
Basement: No
Accessible: Yes
Lot Size: 2.54 acres
Style: Single Family Residential
Year Built: 1953
Year Renovated: 2026
County: San Mateo County
APN: 077271100
HOA Dues: $10/month
Garage: Yes
Features: Views, Green, Pool

Home facts updated by owner on Jul 12, 2026

Around this home

Schools

Ormondale Elementary School

Public K-3 • Assigned • 1.4mi

10/10

Corte Madera School

Public 4-8 • Assigned • 1.8mi

10/10

Woodside High School

Public 9-12 • Assigned • 4.2mi

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

6 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

$5.51M – $6.67M

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Home values near 100 Alamos Rd

Data from public records.

Address	Redfin Estimate
331 Alamos Rd, Portola Valley, CA 4 Beds \| 2.5 Baths \| 2860 Sq. Ft.	$4,817,934
200 Alamos Rd, Portola Valley, CA 5 Beds \| 8 Baths \| 11300 Sq. Ft.	$23,370,649

Address	Redfin Estimate
170 Alamos Rd, Portola Valley, CA 5 Beds \| 3.5 Baths \| 4495 Sq. Ft.	$7,559,111
177 Alamos Rd, Portola Valley, CA 1 Beds \| 2 Baths \| 2390 Sq. Ft.	$7,154,637

Address	Redfin Estimate
150 Alamos Rd, Portola Valley, CA 4 Beds \| 3.5 Baths \| 8333 Sq. Ft.	$15,390,068
365 Alamos Rd, Portola Valley, CA 3 Beds \| 2 Baths \| 1900 Sq. Ft.	$5,546,576

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About this home

Redfin Estimate

Earn from this home

Market trends in 94028, CA

Sale history for 100 Alamos Rd

Tax history for 100 Alamos Rd

Public record

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 100 Alamos Rd

More real estate resources