OFF MARKET

Off Market Oct 2015 for $13M

$19,851,632

•

8,716

sq ft

80 Reservoir Rd, Atherton, CA 94027

About this home

Designed by Oldson Sundberg Architects and built by Van Acker Construction. The 3-bedroom, 3.5 bath main house is woven into the gardens, looking out across the open lawn to the pool and 2-bedroom pool pavilion/guesthouse. Built to the highest engineering standards, the home incorporates art and natural materials into the architecture. Walls of glass allow the home to be opened entirely to the outdoors. A 1-bedroom apartment, oversized pool, and absolute privacy complete this exceptional 2.6 acre property.

Single-familyProperty Type

1998Year Built

2.67 acresLot Size

$2,278Est. Price/Sq.Ft.

3 car garageParking

Listed by Hugh Cornish •DRE #00912143 • Coldwell Banker Realty

Contact: 650-566-5353

Bought with Kay Wang •DRE #01936871 • Alain Pinel Realtors

Redfin checked: a few seconds ago

•Source:MLSListings #ML81513111

Redfin Estimate

$19,851,632

$6.6M since sold in October 2015$3.3M since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 113.7% higher than the average sale price ($9.29M) of 6 comparable homes.

SOLD MAY 26, 2026
$4,525,000
A
4 beds3.5 baths2,486 sq ft
2130 Mills Ave, Menlo Park, CA 94025
SOLD APR 17, 2026
$8,050,000
B
4 beds3.5 baths5,106 sq ft
5 Ridge View Dr, Atherton, CA 94027
SOLD JUN 22, 2026
$15,500,000
C
6 beds3 baths5,992 sq ft
450 Walsh Rd, Atherton, CA 94027
SOLD AUG 7, 2026
$4,108,000
D
4 beds3 baths2,840 sq ft
1185 Trinity Dr, Menlo Park, CA 94025
SOLD APR 27, 2026
$15,300,000
E
3 beds4.5 baths3,216 sq ft
93 Broadacres Rd, Atherton, CA 94027
SOLD AUG 17, 2026
$8,250,250
F
4 beds3 baths3,230 sq ft
40 Montana Ln, Menlo Park, CA 94025

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Earn from this home

Sell

$10,726,421

Est. take-home

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Rent

$11,232/mo

Redfin rental estimate

List your home for rent

Market trends in 94027, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

106.6%

+2.6% MoM

Median sale price

$12.0M

$795K MoM

Avg. days on market

19d

2 days MoM

Recently sold homes

7 MoM

New listings for sale

$4,888,000
4 beds3 baths2,604 sq ft
57 Wilburn Ave, Atherton, CA 94027
$22,000,000
6 beds7 baths7,905 sq ft
51 Valley Rd, Atherton, CA 94027
(415) 846-4685
EARLY ACCESS
$15,800,000
4 beds5 baths5,800 sq ft
187 Atherton Ave, Atherton, CA 94027
VIDEO TOUR
$12,998,000
4 beds4.5 baths4,286 sq ft
368 Camino Al Lago, Atherton, CA 94027
3D WALKTHROUGH
$5,888,000
5 beds4.5 baths3,765 sq ft
28 Holbrook Ln, Atherton, CA 94027
See all

Provided by Redfin

Sale history for 80 Reservoir Rd

Year

Property tax

Land + Additions

Assessment*

2025

$122,954 (+1.2%)

$6,936,932 + $4,365,365

$11,302,297

2024

$121,465 (+1.6%)

$6,800,914 + $4,279,771

$11,080,685

2023

$119,563 (+2.8%)

$6,667,563 + $4,195,855

$10,863,418

2022

$116,275 (+1.6%)

$6,536,827 + $4,113,584

$10,650,411

2021

$114,452 (+2.3%)

$6,408,654 + $4,032,926

$10,441,580

2020

$111,906 (−3.1%)

$6,282,995 + $3,953,850

$10,236,845

2019

$115,516 (+5.1%)

$6,218,571 + $3,913,309

$10,131,880

2018

$109,919 (+4.6%)

$6,096,639 + $3,836,579

$9,933,218

2017

$105,068 (+1.4%)

$5,859,900 + $3,512,600

$9,372,500

2016

$103,666 (+329.8%)

$5,859,900 + $3,512,600

$9,372,500

2015

$24,121 (+0.9%)

$5,745,000 + $3,380,000

$9,125,000

2014

$23,901 (+5.5%)

$87,787 + $1,869,190

$1,956,977

2012

$22,651 (+2.0%)

$87,391 + $1,860,743

$1,948,134

2011

$22,208 (+1.4%)

$85,678 + $1,824,258

$1,909,936

2010

$21,906 (+0.9%)

$83,999 + $1,788,489

$1,872,488

2009

$21,709 (+2.7%)

$83,372 + $1,775,123

$1,858,495

2008

$21,130

$83,571 + $1,779,341

$1,862,912

Tax history for 80 Reservoir Rd

Year

Property tax

Land + Additions

Assessment*

2025

$122,954 (+1.2%)

$6,936,932 + $4,365,365

$11,302,297

2024

$121,465 (+1.6%)

$6,800,914 + $4,279,771

$11,080,685

2023

$119,563 (+2.8%)

$6,667,563 + $4,195,855

$10,863,418

2022

$116,275 (+1.6%)

$6,536,827 + $4,113,584

$10,650,411

2021

$114,452 (+2.3%)

$6,408,654 + $4,032,926

$10,441,580

2020

$111,906 (−3.1%)

$6,282,995 + $3,953,850

$10,236,845

2019

$115,516 (+5.1%)

$6,218,571 + $3,913,309

$10,131,880

2018

$109,919 (+4.6%)

$6,096,639 + $3,836,579

$9,933,218

2017

$105,068 (+1.4%)

$5,859,900 + $3,512,600

$9,372,500

2016

$103,666 (+329.8%)

$5,859,900 + $3,512,600

$9,372,500

2015

$24,121 (+0.9%)

$5,745,000 + $3,380,000

$9,125,000

2014

$23,901 (+5.5%)

$87,787 + $1,869,190

$1,956,977

2012

$22,651 (+2.0%)

$87,391 + $1,860,743

$1,948,134

2011

$22,208 (+1.4%)

$85,678 + $1,824,258

$1,909,936

2010

$21,906 (+0.9%)

$83,999 + $1,788,489

$1,872,488

2009

$21,709 (+2.7%)

$83,372 + $1,775,123

$1,858,495

2008

$21,130

$83,571 + $1,779,341

$1,862,912

*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
Zoning
Permits

Beds

Baths

3.5

Stories

Lot width

—

Lot depth

—

Lot size

1.15 Acres

Year renovated

—

Sq. Ft.

8,710

Year built

1998

Style

Single Family Residential

County

San Mateo County

APN

073212080

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 2, 2026.

R-1A

Residential District

This chapter identifies the allowed use and permit requirements and development standards for the residential district R-1A. The intent of this district is to implement the residential land use categories of the town’s general plan. It is designed to designate land for the development of residential uses consistent with the development regulations set forth in this title.

Permitted uses

Include but are not limited to:

Housing
Housing-Single unit

Sep 16, 2025 • Final

Alt res

Replace windows and doors on a residential building.

Remodel

Nov 30, 2024 • Final

Heritage tree

Remove and replace multiple items as specified.

Grading

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): 3
Garage (Maximum): 3
Parking Description: Detached
Garage Spaces: 3

Interior

Virtual Tour

Bedroom Information
# of Bedrooms (Minimum): 3
# of Bedrooms (Maximum): 3

Bathroom Information
# of Baths (Full): 3
# of Baths (1/2): 1

Room Information
Den/Study/Office, Guest House, In-Law Unit
Family Room Description: Separate Family Room
Dining Room Description: Formal Dining Room
Kitchen Description: Cooktop (Gas), Dishwasher, Hood Over Range, Island with Sink, Microwave, Oven (Double), Pantry, Refrigerator(s)

Interior Features
Laundry: Washer/Dryer

Fireplace Information
Has Fireplace
Fireplace Description: Wood-Burning
Fireplaces (Minimum): 2

Heating & Cooling Information
Cooling: Central Forced Air, Multi-Zone
Heating: Central Forced Air (Gas), Radiant Floors

Exterior

Exterior Features
Roof: Barrel/Truss, Composition, Flat/Low Pitch, Metal, Shingle, Tar and Gravel

Building Information
Subclass: Single Family Home
Building Type: Detached
Concrete Perimeter and Slab

Pool Information
Has Pool
Pool Description: Cabana/Dressing Room, In-Ground

Property Features
Amenities: High Ceiling, Skylight(s), Vaulted Ceiling, Wet Bar
Living Sq. Ft.: 8,716

Property Information
Property Primary ID: 532956

Lot Information
Lot Acres: 2.67
Lot Size Area Minimum Units: Sq. Ft.
Lot Size Area Maximum Units: Sq. Ft.
Lot Size Source: Other (See Remarks)
Zoning: R1001A

Utilities

Utility Information
Sewer Septic: Sewer Connected
Utilities: Generator, Public Utilities

Water Information
Water: Public

Location

Multi-Unit Information
# of Stories: 2

School Information
Elementary School District: Las Lomitas Elementary
High School District: Sequoia Union High

Public facts

Beds: 2
Baths: 3.5
Sq. Ft.: 8,710
Stories: 2.0
Lot Size: 1.15 acres
Style: Single Family Residential
Year Built: 1998
Year Renovated: —
County: San Mateo County
APN: 073212080

Home facts updated by county records on Sep 2, 2026

Around this home

Schools

Las Lomitas Elementary School

Public K-3 • Assigned • 0.8mi

10/10

La Entrada Middle School

Public 4-8 • Assigned • 1.2mi

10/10

Woodside High School

Public 9-12 • Assigned • 1.1mi

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

3/10 Heat Factor

7 days above 95° expected this year, 13 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

Atherton, CA • 94027

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

$18.86M – $22.83M

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3D WALKTHROUGH

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Home values near 80 Reservoir Rd

Data from public records.

Address	Redfin Estimate
76 Reservoir Road, Atherton, CA 5 Beds \| 4 Baths \| 3250 Sq. Ft.	$6,747,190
54 Reservoir Road, Atherton, CA 4 Beds \| 3 Baths \| 2785 Sq. Ft.	$10,429,140

Address	Redfin Estimate
78 Reservoir Road, Atherton, CA 6 Beds \| 6.5 Baths \| 8700 Sq. Ft.	$11,099,167
88 Reservoir Road, Atherton, CA 5 Beds \| 5.5 Baths \| 5779 Sq. Ft.	$14,116,781

Address	Redfin Estimate
32 Reservoir Road, Atherton, CA 4 Beds \| 3.5 Baths \| 3240 Sq. Ft.	$6,223,095
91 Reservoir Road, Atherton, CA 4 Beds \| 3.5 Baths \| 2990 Sq. Ft.	$3,721,038

Property information provided by MLSListings when last listed in 2015. This data may not match . Learn more.

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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 94027, CA

Sale history for 80 Reservoir Rd

Tax history for 80 Reservoir Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94027

Home values near 80 Reservoir Rd

More real estate resources