70 Valley Ct, Atherton, CA 94027 Property Records

San Mateo County property record for 70 Valley Ct, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,499 sqft · built 2000
Lot Size	7.75 acres (337,954 sqft)
Owner	Individual Name on Record
Last Sale	$8,000,000 (Dec 2015)
Tax Bill	$193,673 (2025)
Deeds & Mortgages	Aug 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`073-141-340`

Property Details

APN / Parcel Number

Primary APN	`073-141-340`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,499 sqft Living Area
1st Floor Area	1,499 sqft
Family Room	Family Room

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2000
Lot Area	337,954 sqft
Lot Dimensions	6,784 ft deep x 6,784 ft wide

Location & Zoning

Street Address	70 VALLEY RD
City	SAN CARLOS
State	CA
Zip	94070
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1003A
Legal Description	PARCEL 2 7.758 AC MOL PARCEL MAP VOL 62/61-62
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2011
Census Tract	613300

Owner

Source: San Mateo County records, as of July 15, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	70 VALLEY CT, ATHERTON, CA 94027-6472
Owner Type	Individual
Vesting	Single Woman

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 11, 2015 · Amount on Record
Deed Sale	Dec 11, 2015 · Amount on Record
Prior Sale	Oct 18, 2013 · Amount on Record
Deed Document Number	2015131074
Prior Transfer Date	Jul 25, 2008
Prior Transfer Doc	0000087264
Record Updated	Sep 20, 2026

August 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Aug 25, 2017
Property Address	70 VALLEY CT, ATHERTON, CA 94027-6472
Document Number	0000074718
Instrument Date	Aug 16, 2017
Instrument	74718
Transaction Type	Transfer
Record Updated	Jan 3, 2018

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	2033 GATEWAY PL #250 SAN JOSE CA 951103711, 250, SAN JOSE, CA 95110-3711

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

Type	Name
State	California
County	San Mateo County
Municipality	Woodside Town
Elementary School District	Las Lomitas Elementary School District (KG - 08)
Secondary School District	Sequoia Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$18,644,098 (+6.2%) Land $8,639,470 Building $10,004,628
2025	$193,673.00 (+40.89%) Homeowner's exemption	$17,555,724 (+43.1%) Land $8,470,069 Building $9,085,655
2023	$137,467.00 (+5.29%)	$12,268,401 Land $8,141,167 Building $4,127,234
2022	$130,560.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 62% of the US · lower than 77% of California
Wildfire Likelihood	0.07% annual chance
Exposure	Direct burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CALIFORNIA WATER SERVICE - BEAR GULCH private · serves 60,382 people · EPA ID CA4110006
Water Source	Surface water
Last State Inspection	Feb 2025
Lead	4 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 27 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
Cruzio Fixed Wireless	1,000 / 1,000
Starlink Satellite	280 / 30
T-Mobile Fixed Wireless	100 / 20

May also be available: Etheric Networks, Race Communications.

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