Off market jun 2024 for $4.5M

$5,823,897

Est. refi paymentEst. refi $20,184/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

$1,387Est. Price/Sq.Ft.

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

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

$5,823,897

$1.3M since sold in June 2024$66K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.7% higher than the average sale price ($5.67M) of 4 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 JUN 2, 2026
$5,950,000
C
4 beds3 baths3,380 sq ft
747 Westridge Dr, Portola Valley, CA 94028
SOLD DEC 19, 2025
$5,300,000
D
4 beds3.5 baths4,297 sq ft
415 Golden Oak Dr, Portola Valley, CA 94028

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Earn from this home

Sell

$2,072,142

Est. take-home

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Refinance

Est. cash available

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Rent

$3,691/mo

Redfin rental estimate

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Market trends in 94028, CA

Last updated October 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-list price

98.4%

0.6% MoM

Median sale price

$5.4M

$473K MoM

Avg. days on market

42d

0 days MoM

Recently sold homes

6 MoM

New listings for sale

EARLY ACCESS
$3,398,000
4 beds3 baths2,290 sq ft
220 Canyon Dr, 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

Mar 18, 2024

Listed

bridgeMLS, Bay East AOR, or Contra Costa AOR #ML81910658

Jun 5, 2024

Listing Removed

—

Dec 14, 2022

Listing Removed

—

Nov 14, 2022

Price Changed

$5,688,000

$1,354/sq ft

Oct 31, 2022

Price Changed

$5,988,000

$1,426/sq ft

Oct 17, 2022

Listed

$6,588,000

$1,569/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #ML81696938

Mar 31, 2024

Listing Removed

—

Dec 18, 2018

Listing Removed

—

Sep 17, 2018

Listing Removed

—

Mar 19, 2018

Listed

$4,900,000

$1,167/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

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
# of Carport Spaces: 2
Has Carport: Yes
Parking Features: Covered Parking, Drive-Through, On Street, Room for Oversized Vehicle

Interior

Virtual Tour

Bedroom Information
Bedroom Features: Ground Floor Bedroom, Primary Suite/Retreat, Walk-In Closet, Primary Bedroom on Ground Floor, More Than One Bedroom on Ground Floor

Bathroom Information
# of Baths (Full): 3
Bathroom Features: Dual Flush Toilet, Jack and Jill, Primary Stall Shower(s), Outside Access, Shower over Tub (1), Stall Shower, Stall Shower (2+), Tile, Full on Ground Floor

Appliances
Electric Cooktop, Dishwasher, Freezer, Garbage Disposal, Hood Over Range, Microwave, Built-In Oven, Double Oven, Electric Oven, Gas Oven, Gas Oven Range, Refrigerator, Dryer, Washer

Dining Room Information
Breakfast Bar, Dining Area, Dining Bar

Family Room Information
Separate Family Room

Fireplace Information
# of Fireplaces: 2
Fireplace Features: Family Room, Living Room, Wood Burning

Flooring Information
Carpet, Hardwood, Tile

Interior Features
Accessibility Features: Wide Halls/Doors (3 Ft.+)
Interior Features: Wet Bar, Open Beam Ceiling, Walk-In Closet

Laundry Information
Laundry Features: Tub/Sink, Inside

Room Information
Room Type: Bonus Room, Utility Room, Workshop

Kitchen Information
Kitchen Features: Granite Countertop, Tile Countertop, Island with Sink

Exterior

Building Information
Foundation Details: Concrete Perimeter
Roof: Composition, Shingle

Exterior Features
Fencing: Mixed Height/Type, Wood
Patio & Porch Features: Back Yard, Deck

Year Built
Year Built Details: 2

Lot Information
Lot Features: Hillside (Grade)

Property Features
Additional Legal ADU Type: Guest House

Property Information
Building Area Total (Sq. Ft.): 4,200

View
View: Forest/Woods, Hills, Mountains

Financial

Financial Information
Buyer Financing: Conventional

Utilities

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

Utility Information
Gas: Individual Gas Meters, Public Utilities
Utilities: Public Utilities, Public Water
Water Source: Public

Location

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

Location Information
MLS Area: Central Portola Valley
Street Name: Alamos
Street Number: 100

WalkScore Information
Walk Score: 7

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

K - 12
Preschool & daycare

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

$5.53M – $6.70M

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New listings for sale in 94028

EARLY ACCESSCOMPASS COMING SOON

$3,398,000

4 beds3 baths2,290 sq ft

220 Canyon Dr, Portola Valley, CA 94028

0.37 acre lot • Built 1955

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.	$4,803,518
200 Alamos Rd, Portola Valley, CA 5 Beds \| 8 Baths \| 11300 Sq. Ft.	$22,806,028
225 Alamos Rd, Portola Valley, CA 4 Beds \| 2.5 Baths \| 3600 Sq. Ft.	$5,897,813
228 Westridge Dr, Portola Valley, CA 5 Beds \| 3.5 Baths \| 2790 Sq. Ft.	$8,321,101
137 Ash Ln, Portola Valley, CA 3 Beds \| 5 Baths \| 3790 Sq. Ft.	$7,534,998
118 Westridge Dr, Portola Valley, CA 5 Beds \| 3 Baths \| 4430 Sq. Ft.	$6,242,517
333 Westridge Dr, Portola Valley, CA 7 Beds \| 3.5 Baths \| 4470 Sq. Ft.	$5,843,824

Address	Redfin Estimate
170 Alamos Rd, Portola Valley, CA 5 Beds \| 3.5 Baths \| 4495 Sq. Ft.	$8,335,443
177 Alamos Rd, Portola Valley, CA 1 Beds \| 2 Baths \| 2390 Sq. Ft.	$7,876,063
228 Alamos Dr, Portola Valley, CA 2 Beds \| 2 Baths \| 2240 Sq. Ft.	$3,784,734
157 Westridge Dr, Portola Valley, CA 4 Beds \| 3.5 Baths \| 4380 Sq. Ft.	$5,647,041
187 Westridge Dr, Portola Valley, CA 3 Beds \| 2 Baths \| 2210 Sq. Ft.	$4,623,562
128 Westridge Dr, Portola Valley, CA 4 Beds \| 2 Baths \| 2110 Sq. Ft.	$4,198,242
140 Westridge Dr, Portola Valley, CA 4 Beds \| 3.5 Baths \| 2850 Sq. Ft.	$6,488,648

Address	Redfin Estimate
150 Alamos Rd, Portola Valley, CA 4 Beds \| 3.5 Baths \| 8333 Sq. Ft.	$15,024,215
365 Alamos Rd, Portola Valley, CA 3 Beds \| 2 Baths \| 1900 Sq. Ft.	$6,233,570
121 Ash Ln, Portola Valley, CA 2 Beds \| 4.5 Baths \| 6122 Sq. Ft.	$25,611,241
138 Bolivar Ln, Portola Valley, CA 6 Beds \| 6 Baths \| 4175 Sq. Ft.	—
127 Westridge Dr, Portola Valley, CA 5 Beds \| 4 Baths \| 4530 Sq. Ft.	$9,965,271
332 Westridge Dr, Portola Valley, CA 4 Beds \| 4.5 Baths \| 3680 Sq. Ft.	$10,607,615
207 Westridge Dr, Portola Valley, CA 3 Beds \| 3.5 Baths \| 4760 Sq. Ft.	$6,323,564

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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