497 Walsh Rd, Atherton, CA 94027 Property Records

San Mateo County property record for 497 Walsh Rd, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 2 ba · 4,677 sqft · built 1972
Lot Size	1.02 acres (44,594 sqft)
Owner	2 Company Names on Record
Last Sale	$11,950,000 (Mar 2025)
Tax Bill	$22,208 (2025)
Deeds & Mortgages	Mar 2020 Mortgage Nov 2018 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`074-371-210`

Property Details

APN / Parcel Number

Primary APN	`074-371-210`

Interior

Bedrooms	5 Beds
Full Baths	2 Baths
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	4,677 sqft Living Area
1st Floor Area	2,561 sqft
2nd Floor Area	1,973 sqft
Family Room	Family Room
Study	Study
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1972
Effective Year Built	Effective 1972
Architectural Style	Ranch
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	44,594 sqft
Garage Area	752 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	497 WALSH RD
City	ATHERTON
State	CA
Zip	94027-6438
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	1.11 AC MOL BEING PTN OF LOTS 1 2 & 3 ATHERTON WEST RSM 55/36
Legal Subdivision	ATHERTON WEST
Legal Lot Number	1
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3009
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	2 Company Names on Record
Mailing Address	497 WALSH RD, ATHERTON, CA 94027-6438
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 30, 2020	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA
Nov 1, 2018	Deed of Trust, Mortgage · ARM JPMORGAN CHASE BANK NA
Jul 13, 2018	Grant Deed, Transfer LAWYERS TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 24, 2025 · Amount on Record
Deed Sale	Mar 24, 2025 · Amount on Record
Prior Sale	Jul 13, 2018 · Amount on Record
Deed Document Number	202513320
Prior Transfer Date	Sep 17, 2010
Prior Transfer Doc	0000116165
Record Updated	Oct 29, 2026

March 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	497 WALSH RD, ATHERTON, CA 94027-6438
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	TITLE FIRST AGENCY INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000028896
Date	Mar 30, 2020
Instrument	2020-028896

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	WESTMONT, IL 60559

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2050

November 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	497 WALSH RD, ATHERTON, CA 94027-6438
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	TITLE FIRST AGENCY INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000085515
Date	Nov 1, 2018
Instrument	2018-085515

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	ARM
Amount	Amount Recorded
Term	360 Months
Due	Nov 1, 2048

Interest

Rate Type	Adjustable Rate
Rate	4%
Type Change Date	Nov 1, 2028
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	6%
Index	1-Year LIBOR
Max Rate	9%

July 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jul 13, 2018
Property Address	497 WALSH RD, ATHERTON, CA 94027-6438
Document Number	0000055097
Instrument Date	Jul 3, 2018
Instrument	55097
Transaction Type	Transfer
Record Updated	Aug 7, 2018
Title Company	LAWYERS TITLE

Transaction

Amount	Amount Recorded
Tax	$7,040.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	497 WALSH RD ATHERTON CA 940276438, ATHERTON, CA 94027-6438

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	Assessed Market Value
2026		$12,189,000 (+552.66%) Land $9,078,000 Building $3,111,000
2025	$22,208.00 (+1.41%)	$1,867,580 (+4.04%) Land $861,904 Building $1,005,676
2024	$21,900.00 (+1.74%)
2023	$21,525.00 (+2.75%)	$1,795,061 Land $828,436 Building $966,625	$3,679,470
2022	$20,949.00

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

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	Moderate above 45% of the US · lower than 73% of California
Wildfire Likelihood	0.08% 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 168 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Cruzio Fixed Wireless	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Etheric Networks, Race Communications.

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