70 Stern Ln, Atherton, CA 94027 Property Records

San Mateo County property record for 70 Stern Ln, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 5.5 ba · 9,915 sqft · built 2008
Lot Size	1.02 acres (44,625 sqft)
Owner	Company Name on File
Last Sale	$18,900,000 (Aug 2014)
Tax Bill	$250,917 (2025)
Deeds & Mortgages	Jul 2022 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`070-170-050`

Property Details

APN / Parcel Number

Primary APN	`070-170-050`

Interior

Bedrooms	5 Beds
Full Baths	5.5 Baths
Half Baths	1 Half Bath
Total Rooms	18 Rooms
Stories	2 Stories
Building Area	9,915 sqft Living Area
1st Floor Area	3,903 sqft
2nd Floor Area	2,642 sqft
Basement Area	3,370 sqft
Finished Basement	3,370 sqft
Family Room	Family Room
Study	Study

Exterior

Year Built	Built 2008
Effective Year Built	Effective 2008
Lot Area	44,625 sqft
Lot Dimensions	255 ft deep x 175 ft wide
Garage Area	765 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	70 STERN LN
City	ATHERTON
State	CA
Zip	94027-5423
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	LOT 4 STERN LANE ACRES RSM 47/18 TOWN OF ATHERTON
Legal Subdivision	STERN LANE ACRES
Legal Lot Number	4
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2001
Census Tract	611400

Owner

70 Stern Ln is owned by a company that acquired it in May 2022.

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

Owner of Record	Company Name on File
Mailing Address	70 STERN LN, ATHERTON, CA 94027-5423
Owner Type	Company
Vesting	Limited Liability Partnership

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 21, 2014 · Amount on File
Deed Sale	Aug 21, 2014 · Amount on File
Prior Sale	Oct 31, 2006 · Amount on File
Deed Document Number	201475466
Last Transfer Date	May 17, 2022
Transfer Doc	0000056261
Record Updated	Sep 20, 2026

July 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Jul 22, 2022
Property Address	70 STERN LN, ATHERTON, CA 94027-5423
Document Number	0000056261
Map Reference	MB 47 PG 18
Instrument Date	May 17, 2022
Instrument	2022-056261
Transaction Type	Transfer
Record Updated	Oct 18, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1259 EL CAMINO REAL # 421, 421, MENLO PARK, CA 94025-4208

Mortgage

Document Number	0000056262
Date	Jul 22, 2022
Instrument	2022-056262

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	Unknown
Amount	Amount on Record
Term	300 Months
Due	Jul 26, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 70 Stern Ln was $250,917.

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

Property Jurisdictions

Type	Name
State	California
Municipality	Atherton Town
County	San Mateo County
Elementary School District	Menlo Park City 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		$23,169,266 (+2%) Land $11,584,633 Building $11,584,633
2025	$250,917.00	$22,714,968 Land $11,357,484 Building $11,357,484
2023	$239,531.00 (+2.41%)	$21,832,920 Land $10,916,460 Building $10,916,460
2022	$233,904.00

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

Flood

FEMA maps place 70 Stern Ln in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1995.

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
Flood Insurance Cost	Premium on File median of 13 policies
Nearby Flood Policies	13 in force
Nearby Flood Claims	2 (1995–1998)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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

Wildfire risk around 70 Stern Ln is low, with a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 94% of the US · lower than 96% of California
Wildfire Likelihood	0.01% 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 126 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Race Communications Fiber	10,000 / 10,000
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Cruzio, Etheric Networks, T-Mobile.

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