78 Walnut Ave, Atherton, CA 94027 Property Records

San Mateo County property record for 78 Walnut Ave, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 4.5 ba · 4,032 sqft · built 2007
Lot Size	0.15 acres (6,550 sqft)
Owner	2 Company Names on Record
Last Sale	$388,000 (Dec 1998)
Tax Bill	$20,605 (2025)
Deeds & Mortgages	Feb 2018 Second Mortgage Oct 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`060-332-220`

Property Details

APN / Parcel Number

Primary APN	`060-332-220`

Interior

Bedrooms	5 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	4,032 sqft Living Area
1st Floor Area	1,389 sqft
2nd Floor Area	1,180 sqft
Basement Area	1,463 sqft
Finished Basement	1,463 sqft
Family Room	Family Room

Exterior

Year Built	Built 2007
Effective Year Built	Effective 2007
Lot Area	6,550 sqft (0.15 acres)
Lot Dimensions	131 ft deep x 50 ft wide
Garage Area	180 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	78 WALNUT AVE
City	ATHERTON
State	CA
Zip	94027-3821
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	LOT 16 BLOCK B MENLO PARK VILLA LOTS RSM 1/93 TOWN OF ATHERTON
Legal Subdivision	MENLO PARK VILLA
Legal Block	B
Legal Lot Number	16
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2024
Census Tract	611500

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	PO BOX 50581, PALO ALTO, CA 94303-0581
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Feb 1, 2018	Deed of Trust, Mortgage · Stand-Alone Second Mortgage TECHNOLOGY CU
Oct 8, 2020	Deed of Trust, Mortgage · Conventional Mortgage TECHNOLOGY CU
Nov 29, 2021	Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE INC
Sep 23, 2020	Loan Modification, Mortgage · Conventional Mortgage TECHNOLOGY FCU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 2, 1998 · Amount on Record
Deed Sale	Dec 2, 1998 · Amount on Record
Deed Document Number	1998199220
Last Transfer Date	Jun 20, 2003
Transfer Doc	0000193074
Record Updated	Sep 20, 2026

February 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	78 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000006648
Date	Feb 1, 2018
Instrument	2018-006648

Lender

Name	TECHNOLOGY CU
Type	Credit Union
Address	SAN JOSE, CA 95131

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount Recorded
Term	300 Months
Due	Feb 20, 2043

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	78 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	78 WALNUT AVE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000108068
Date	Oct 8, 2020
Instrument	2020-108068

Lender

Name	TECHNOLOGY CU
Type	Credit Union
Address	SAN JOSE, CA 95131

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	120 Months
Due	Oct 1, 2030

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	78 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	ORABGE COAST TITLE, ORANGE COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	78 WALNUT AVE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000163369
Date	Nov 29, 2021
Instrument	2021-163369

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

September 2020: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	SAN MATEO CA
Property Address	78 WALNUT AVE, ATHERTON, CA 94027-3821
Document Number	0000108069
Instrument Date	Sep 23, 2020
Transaction Type	Mortgage
Record Updated	Nov 12, 2020
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	78 WALNUT AVE ATHERTON CA 940273821, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000108069
Date	Oct 8, 2020
Instrument	108069

Lender

Name	TECHNOLOGY FCU
Type	Credit Union
Address	SAN JOSE, CA 95131

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

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	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	Assessed Market Value
2026		$1,649,989 (+2%) Land $310,207 Building $1,339,782
2025	$20,605.00 (+5.13%) Homeowner's exemption	$1,617,637 (+4.04%) Land $304,125 Building $1,313,512
2023	$19,600.00 (+2.52%) Homeowner's exemption	$1,554,823 Land $292,316 Building $1,262,507	$3,901,050
2022	$19,119.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

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	4 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 98% of the US · lower than 98.4% of California
Wildfire Likelihood	Under 0.01% 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 296 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, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20

May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile.

Nearby Properties on Walnut Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures