338 Walsh Rd, Atherton, CA 94027 Property Records

San Mateo County property record for 338 Walsh Rd, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	7 bd · 7.5 ba · 12,322 sqft · built 2020
Lot Size	1.11 acres (48,480 sqft)
Owner	Company Name on Record
Last Sale	$27,750,000 (Aug 2023)
Tax Bill	$311,301 (2025)
Deeds & Mortgages	Aug 2023 Sale Apr 2022 Sale + 3 more
Flood Zone	Zone X (minimal risk)
APN	`073-220-390`

Property Details

APN / Parcel Number

Primary APN	`073-220-390`

Interior

Bedrooms	7 Beds
Full Baths	7.5 Baths
Half Baths	1 Half Bath
Total Rooms	19 Rooms
Stories	2 Stories
Building Area	12,322 sqft Living Area
1st Floor Area	4,345 sqft
2nd Floor Area	3,384 sqft
Basement Area	4,593 sqft
Finished Basement	4,593 sqft

Exterior

Year Built	Built 2020
Effective Year Built	Effective 2020
Lot Area	48,480 sqft
Garage Area	1,151 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	338 WALSH RD, 338A
City	ATHERTON
State	CA
Zip	94027-6460
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT A 1.112 AC MOL PM 83/73-74
Legal Subdivision	PARCEL MAP
Legal Lot Number	A
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3007
Census Tract	611400

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	Company Name on Record
Mailing Address	50 WOODSIDE PLZ, REDWOOD CITY, CA 94061-2500
Owner Type	Company
Vesting	Limited Liability Company

Deeds, Mortgages & Sale History

Date	Document
Aug 28, 2023	Grant Deed, Transfer LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY
Apr 21, 2022	Grant Deed, Transfer FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY
Sep 14, 2020	Grant Deed, Transfer LAWYERS TITLE
Jul 6, 2020	Deed of Trust, Construction Loan · Construction Mortgage FIRST REPUBLIC BK
Dec 20, 2017	Deed of Trust, Construction Loan · Construction Mortgage FIRST REPUBLIC BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 28, 2023 · Amount on Record
Deed Sale	Aug 28, 2023 · Amount on Record
Prior Sale	Apr 21, 2022 · Amount on Record
Deed Document Number	202341514
Record Updated	Sep 20, 2026

August 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Aug 28, 2023
Property Address	338 WALSH RD, ATHERTON, CA 94027-6460
Document Number	0000041514
Map Reference	MB 83 PG 73&74
Instrument Date	Aug 24, 2023
Instrument	2023-041514
Transaction Type	Transfer
Record Updated	Oct 3, 2023
Title Company	LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$30,525.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	50 WOODSIDE PLZ # 507, 507, REDWOOD CITY, CA 94061-2500

April 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Apr 21, 2022
Property Address	338 WALSH RD, ATHERTON, CA 94027-6460
Document Number	0000033756
Map Reference	MB 83 PG 73&74
Instrument Date	Mar 31, 2022
Instrument	2022-033756
Transaction Type	Transfer
Record Updated	May 6, 2022
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$28,600.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4855 TECHNOLOGY WAY STE 630, 630, BOCA RATON, FL 33431-3351

September 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Sep 14, 2020
Property Address	338 WALSH RD, ATHERTON, CA 94027-6460
Document Number	0000094444
Instrument Date	Sep 7, 2020
Instrument	94444
Transaction Type	Transfer
Record Updated	Oct 23, 2020
Title Company	LAWYERS TITLE

Transaction

Amount	Amount Recorded
Tax	$24,420.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	394 PACIFIC AVE #2ND SAN FRANCISCO CA 941111707, 2ND, SAN FRANCISCO, CA 94111-1707

July 2020: Deed of Trust, Construction Loan

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Recording Date	Jul 6, 2020
Property Address	338 WALSH RD, ATHERTON, CA 94027-6460
Document Number	0000063658
Instrument Date	Apr 30, 2020
Instrument	63658
Transaction Type	Construction Loan
Record Updated	Jan 19, 2021
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	338 WALSH RD ATHERTON CA 940276460, ATHERTON, CA 94027-6460

Mortgage

Document Number	0000063658
Date	Jul 6, 2020
Instrument	63658

Lender

Name	FIRST REPUBLIC BK
Type	Bank
Address	111 PINE ST, SAN FRANCISCO, CA 94111-5602

Agreement

Type	Construction Mortgage
Amount	Amount Recorded
Term	12 Months
Due	Jul 5, 2021

Interest

Rate Type	Adjustable Rate

December 2017: Deed of Trust, Construction Loan

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Recording Date	Dec 20, 2017
Property Address	338 WALSH RD, ATHERTON, CA 94027-6460
Document Number	0000114344
Instrument Date	Nov 30, 2017
Instrument	114344
Transaction Type	Construction Loan
Record Updated	Jan 19, 2021
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	338 WALSH RD ATHERTON CA 94027, ATHERTON, CA 94027

Mortgage

Document Number	0000114344
Date	Dec 20, 2017
Instrument	114344

Lender

Name	FIRST REPUBLIC BK
Type	Bank
Address	111 PINE ST, SAN FRANCISCO, CA 94111-5602

Agreement

Type	Construction Mortgage
Amount	Amount Recorded
Term	36 Months
Due	Dec 19, 2020

Interest

Rate Type	Adjustable Rate
Rate	5.25%

Tax Assessment & Valuation

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	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		$28,871,100 (+2%) Land $8,063,100 Building $20,808,000
2025	$311,301.00 (+5.43%)	$28,305,000 (+6.73%) Land $7,905,000 Building $20,400,000
2023	$295,255.00 (+17.98%)	$26,520,000 Land $7,650,000 Building $18,870,000
2022	$250,257.00

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
Flood Insurance Cost	Premium on Record median of 10 policies
Nearby Flood Policies	10 in force
Nearby Flood Claims	1 (2022)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides

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 95% of the US · lower than 97% 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 110 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, GeoLinks, T-Mobile, Verizon.

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