440 Walsh Rd, Atherton, CA 94027 Property Records

San Mateo County property record for 440 Walsh Rd, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	6 bd · 8 ba · 10,399 sqft · built 2018
Lot Size	1.11 acres (48,642 sqft)
Owner	Company Name on File
Last Sale	$16,900,000 (Nov 2018)
Tax Bill	$207,936 (2025)
Deeds & Mortgages	Apr 2024 Mortgage Nov 2018 Sale & Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`073-261-280`

Property Details

APN / Parcel Number

Primary APN	`073-261-280`

Interior

Bedrooms	6 Beds
Full Baths	8 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	10,399 sqft Living Area
1st Floor Area	3,670 sqft
2nd Floor Area	3,036 sqft
Basement Area	3,693 sqft
Finished Basement	3,693 sqft
Family Room	Family Room

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Lot Area	48,642 sqft
Garage Area	888 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	440 WALSH RD
City	ATHERTON
State	CA
Zip	94027-6439
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	PARCEL 3 1.116 AC MOL PARCEL MAP VOL 20/42
Legal Subdivision	MEZES RANCH
Legal Block	1
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3010
Census Tract	611400

Owner

440 Walsh Rd is owned by a company that bought it in November 2018.

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

Owner of Record	Company Name on File
Mailing Address	PO BOX 2548, SAN FRANCISCO, CA 94126-2548
Owner Type	Company
Vesting	Company

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

Date	Document
Apr 30, 2024	Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA
Nov 21, 2018	Grant Deed, Transfer · ARM FIRST REPUBLIC BANK
Oct 10, 2018	Loan Modification, Mortgage FIRST REPUBLIC BK
Jul 16, 2018	Loan Modification, Mortgage FIRST REPUBLIC BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 21, 2018 · Amount on File
Deed Sale	Nov 21, 2018 · Amount on File
Prior Sale	May 19, 2015 · Amount on File
Deed Document Number	201890868
Prior Transfer Date	Sep 25, 2006
Prior Transfer Doc	0000146581
Record Updated	Oct 29, 2026

April 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	440 WALSH RD, ATHERTON, CA 94027-6439
Transaction Type	Mortgage
Record Updated	May 22, 2024
Title Company	LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	394 PACIFIC AVE, SAN FRANCISCO, CA 94111-1707

Mortgage

Document Number	0000022036
Date	Apr 30, 2024
Instrument	2024-022036

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2054

Interest

Rate Type	Adjustable Rate
Rate	5.87%
Type Change Date	May 1, 2034
Change Frequency	6 Months
Min Rate At Change	3.87%
Max Rate At Change	7.87%
Index	SOFR Average 30-Day
Max Rate	10.8%

November 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Nov 21, 2018
Property Address	440 WALSH RD, ATHERTON, CA 94027-6439
Document Number	0000090868
Map Reference	MB20 PG42
Instrument Date	Nov 13, 2018
Instrument	2018-090868
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	LAWYERS TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	440 WALSH RD, ATHERTON, CA 94027-6439

Mortgage

Document Number	0000090869
Date	Nov 21, 2018
Instrument	2018-090869

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	ARM
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2048

Interest

Rate Type	Adjustable Rate
Rate	3.2%
Type Change Date	Feb 1, 2024
Change Frequency	Annually
Min Rate At Change	2.65%
Index	1-Year LIBOR
Max Rate	10.9%

October 2018: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	SAN MATEO CA
Property Address	440 WALSH RD, ATHERTON, CA 94027-6439
Document Number	0000079889
Instrument Date	Oct 10, 2018
Transaction Type	Mortgage
Record Updated	Oct 31, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	440 WALSH RD ATHERTON CA 940276439, ATHERTON, CA 94027-6439

Mortgage

Document Number	0000079889
Date	Oct 15, 2018
Instrument	79889

Lender

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

Agreement

Amount	Amount on Record
Term	12 Months
Due	Oct 14, 2019

July 2018: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	SAN MATEO CA
Property Address	440 WALSH RD, ATHERTON, CA 94027-6439
Document Number	0000056566
Instrument Date	Jul 16, 2018
Transaction Type	Mortgage
Record Updated	Aug 7, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	440 WALSH RD ATHERTON CA 940276439, ATHERTON, CA 94027-6439

Mortgage

Document Number	0000056566
Date	Jul 20, 2018
Instrument	56566

Lender

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

Agreement

Amount	Amount on Record
Term	12 Months
Due	Jul 19, 2019

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 440 Walsh Rd was $207,936.

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		$19,270,312 (+2.22%) Land $9,614,656 Building $9,655,656
2025	$207,936.00	$18,852,268 Land $9,426,134 Building $9,426,134
2023	$202,261.00 (+2.84%)	$18,120,212 Land $9,060,106 Building $9,060,106
2022	$196,684.00

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

Flood

FEMA maps place 440 Walsh Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2022.

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 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

Wildfire risk around 440 Walsh Rd is low, with a 0.02% 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	0.02% annual chance
Exposure	None beyond ember reach

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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