Set behind private gates on a flat, over 1 acre lot enclosed by a privacy wall, this single-story Tuscan villa offers a rare convergence of architectural integrity and absolute seclusion on one of Athertons most coveted locations with no through traffic-a quiet distinction that speaks to the discretion and privacy this address commands. Just minutes from Sharon Heights Country Club, Sand Hill Road and Stanford University-the location is at the very center of Silicon Valley, close to the venture capital firms, research institutions, and tech leaders that define the region. Built in 1995 by Collin Whiteside, the residence reflects a level of craftsmanship increasingly rare in new construction. 12-foot ceilings, five fireplaces, and hand detailed finishes throughout. At the heart of the home, a central courtyard serves as both architectural anchor and daily retreat, with nearly every bedroom offering direct access to the courtyard or the surrounding yard, reinforcing the seamless indoor-outdoor rhythm that defines authentic Tuscan design. A 2011 addition thoughtfully expanded the floor plan with a formal bedroom suite and an office/pool room, adding flexibility for remote work, guests, or multi generational living without disrupting the homes original character.
Est. $12,068 per month, based on comparable rentals
Sale and tax history for 27 Valley Rd
Sale History
Tax History
Date
Event
Price
MLSListings #ML82057394
Sep 28, 2026
Sold
$11,000,000
$2,369/sq ft
Sep 24, 2026
Pending
—
Sep 24, 2026
Pending
—
Sep 22, 2026
Pending
—
Sep 3, 2026
Pending
—
Aug 13, 2026
Listed
$9,888,070
$2,130/sq ft
Set behind private gates on a flat, over 1 acre lot enclosed by a privacy wall, this single-story Tuscan villa offers a rare convergence of architectural integrity and absolute seclusion on one of Athertons most coveted locations with no through traffic-a quiet distinction that speaks to the discretion and privacy this address commands. Just minutes from Sharon Heights Country Club, Sand Hill Road and Stanford University-the location is at the very center of Silicon Valley, close to the venture capital firms, research institutions, and tech leaders that define the region. Built in 1995 by Collin Whiteside, the residence reflects a level of craftsmanship increasingly rare in new construction.12-foot ceilings, five fireplaces, and hand detailed finishes throughout. At the heart of the home, a central courtyard serves as both architectural anchor and daily retreat, with nearly every bedroom offering direct access to the courtyard or the surrounding yard, reinforcing the seamless indoor-outdoor rhythm that defines authentic Tuscan design. A 2011 addition thoughtfully expanded the floor plan with a formal bedroom suite and an office/pool room, adding flexibility for remote work, guests, or multi generational living without disrupting the homes original character.
Public Records
Sep 28, 2006
Sold
$3,423,287
$737/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #ML80627994
Sep 27, 2006
Sold
$3,500,000
$754/sq ft
Sep 27, 2006
Listing Removed
—
Aug 24, 2006
Sold
$3,500,000
$754/sq ft
May 14, 2006
Listed
$4,180,000
$900/sq ft
+4
Gorgeous Tuscan-style home on 1+ac. built in 1995 by Colin Whiteside. Large living room w/ 12 ft ceiling, formal library, great kitchen, sep.din. area, 4 frplcs, elegant master ste, lg tile terrace, pool &spa, tourfactory.com/277881
MLSListings #1
Jun 29, 2006
Price Changed
$4,180,000
$900/sq ft
Public Records
Dec 20, 1994
Sold
$669,000
$144/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$56,181 (+1.3%)
$3,553,119 + $1,520,740
$5,073,859
2024
$55,475 (+1.6%)
$3,483,450 + $1,490,922
$4,974,372
2023
$54,585 (+2.8%)
$3,415,148 + $1,461,689
$4,876,837
2022
$53,094 (+1.6%)
$3,348,185 + $1,433,030
$4,781,215
2021
$52,262 (+2.3%)
$3,282,535 + $1,404,932
$4,687,467
2020
$51,102 (−3.0%)
$3,218,172 + $1,377,385
$4,595,557
2019
$52,697 (+5.1%)
$3,185,174 + $1,363,263
$4,548,437
2018
$50,156 (+1.9%)
$3,122,720 + $1,336,534
$4,459,254
2017
$49,224 (+0.7%)
$3,001,462 + $1,284,637
$4,286,099
2016
$48,879 (+1.9%)
$3,001,462 + $1,284,637
$4,286,099
2015
$47,969 (+0.8%)
$2,942,610 + $1,259,449
$4,202,059
2014
$47,602 (+5.5%)
$2,841,635 + $1,216,232
$4,057,867
2012
$45,120 (+7.9%)
$2,828,793 + $1,210,736
$4,039,529
2011
$41,834 (+1.3%)
$2,773,327 + $1,186,997
$3,960,324
2010
$41,280 (+0.7%)
$2,718,949 + $941,174
$3,660,123
2009
$41,014 (+2.4%)
$2,698,629 + $934,140
$3,632,769
2008
$40,035
$2,705,040 + $936,360
$3,641,400
Public record
Public record
Zoning
Permits
Beds
4
Baths
4.5
Stories
1
Lot width
—
Lot depth
—
Lot size
1.04 Acres
Year renovated
—
Sq. Ft.
4,380
Year built
1995
Style
Single Family Residential
County
San Mateo County
APN
073261360
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
Jun 10, 2015 • Final
Add alt res
Work on a bedroom, bathroom, and study.
Addition
Remodel
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
Garage Information
# of Garage Spaces: 3
Parking Information
Has Garage: Yes
Parking Features: Detached, Guest/Visitor Parking
Interior
Virtual Tour
Bedroom Information
Bedroom Features: Primary Bedroom on Ground Floor, More Than One Bedroom on Ground Floor
Bathroom Information
# of Baths (Full): 4
# of Baths (1/2): 1
Bathroom Features: Double Sinks, Marble, Primary Stall Shower(s), Primary Sunken Tub, Shower over Tub (1), Full on Ground Floor
Appliances
Dishwasher, Hood Over Range, Gas Oven Range, Refrigerator, Washer/Dryer
Dining Room Information
Dining Area, Eat-In Kitchen
Family Room Information
Separate Family Room
Fireplace Information
# of Fireplaces: 5
Fireplace Features: Living Room, Primary Bedroom, Other Location
Flooring Information
Tile, Wood
Laundry Information
Laundry Features: Tub/Sink, Inside
Room Information
Room Type: Office
Kitchen Information
Kitchen Features: Pantry
Exterior
Building Information
Foundation Details: Concrete Perimeter
Roof: Tile
Pool Information
Pool Features: Heated (Solar)
Stories
Stories: 1
Year Built
Year Built Details: 2
Property Information
Building Area Total (Sq. Ft.): 4,643
Utilities
Heating & Cooling
Cooling: Central Forced Air
Heating: Central Forced Air (Gas)
Utility Information
Gas: Public Utilities
Utilities: Public Utilities, Public Water
Water Source: Public
Location
School Information
Elementary School District: Las Lomitas Elementary
High School District: Sequoia Union High
Location Information
MLS Area: Alameda to 280
Street Name: Valley
Street Number: 27
WalkScore Information
Walk Score: 2
Public facts
Beds: 4
Baths: 4.5
Sq. Ft.: 4,380
Stories: 1.0
Lot Size: 1.04 acres
Style: Single Family Residential
Year Built: 1995
Year Renovated: —
County: San Mateo County
APN: 073261360
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
Las Lomitas Elementary School
Public K-3 • Assigned • 1.2mi
10/10
La Entrada Middle School
Public 4-8 • Assigned • 1.4mi
10/10
Woodside High School
Public 9-12 • Assigned • 1.4mi
8/10
Provided by GreatSchools
Climate risks
10/10 Flood Factor
Estimated 80%+ chance 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
7 days above 97° expected this year, 14 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)
61
41
64
45
71
47
70
48
74
51
78
55
79
56
81
57
80
60
77
53
65
46
60
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
78/ 100
Good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$7.67M – $9.28M
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