56 Walnut Ave, Atherton, CA 94027 Property Records

San Mateo County property record for 56 Walnut Ave, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,270 sqft · built 1989
Lot Size	0.15 acres (6,550 sqft)
Owner	2 Company Names on Record
Last Sale	$2,398,000 (May 2017)
Tax Bill	$34,829 (2025)
Deeds & Mortgages	Oct 2019 Mortgage Apr 2020 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`060-332-180`

Property Details

APN / Parcel Number

Primary APN	`060-332-180`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,270 sqft Living Area
1st Floor Area	1,140 sqft
2nd Floor Area	1,130 sqft
Family Room	Family Room
Study	Study
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Lot Area	6,550 sqft (0.15 acres)
Lot Dimensions	131 ft deep x 50 ft wide
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	56 WALNUT AVE
City	ATHERTON
State	CA
Zip	94027-3821
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10000
Legal Description	LOT 12 BLOCK B MENLO PARK VILLA LOTS RSM 1/93 TOWN OF ATHERTON
Legal Subdivision	MENLO PARK VILLA
Legal Block	B
Legal Lot Number	12
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	56 WALNUT AVE, ATHERTON, CA 94027-3821
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Oct 29, 2019	Deed of Trust, Mortgage · Conventional Mortgage US BANK NA
Apr 6, 2020	Deed of Trust, Mortgage · Conventional Mortgage US BANK NA
Sep 20, 2021	Deed of Trust, Mortgage · Conventional Mortgage US BANK NA
Oct 10, 2019	Quit Claim Deed, Transfer ATTORNEY ONLY
May 30, 2017	Grant Deed, Transfer · ARM MUFG UNION BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 30, 2017 · Amount on Record
Deed Sale	May 30, 2017 · Amount on Record
Prior Sale	Jun 6, 2003 · Amount on Record
Deed Document Number	201746184
Prior Transfer Date	Mar 9, 1998
Prior Transfer Doc	0000036837
Record Updated	Sep 20, 2026

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	56 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000090267
Date	Oct 29, 2019
Instrument	2019-090267

Lender

Name	US BANK NA
Type	Bank
Address	OWENSBORO, KY 42301

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3%
Type Change Date	Nov 1, 2026
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	8%
Index	1-Year CMT
Max Rate	8%

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	56 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000030972
Date	Apr 6, 2020
Instrument	2020-030972

Lender

Name	US BANK NA
Type	Bank
Address	OWENSBORO, KY 42301

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	2.62%
Type Change Date	Apr 1, 2027
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	7.62%
Index	1-Year CMT
Max Rate	7.62%

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	56 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	56 WALNUT AVE AYE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000134376
Date	Sep 20, 2021
Instrument	2021-134376

Lender

Name	US BANK NA
Type	Bank
Address	OWENSBORO, KY 42301

Agreement

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

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Oct 10, 2019
Property Address	56 WALNUT AVE, ATHERTON, CA 94027-3821
Document Number	0000084504
Instrument Date	Oct 1, 2019
Instrument	84504
Transaction Type	Transfer
Record Updated	Oct 31, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	56 WALNUT AVE ATHERTON CA 940273821, ATHERTON, CA 94027-3821
Investor	Possibly a Property Investor

May 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 30, 2017
Property Address	56 WALNUT AVE, ATHERTON, CA 94027-3821
Document Number	0000046184
Map Reference	MR6 PG295
Instrument Date	May 5, 2017
Instrument	2017-046184
Transaction Type	Transfer
Record Updated	Aug 5, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

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

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	56 WALNUT AVE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000046185
Date	May 30, 2017
Instrument	2017-046185

Lender

Name	MUFG UNION BANK NA
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	3.5%
Type Change Date	Jun 1, 2027
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	5.5%
Index	1-Year LIBOR
Max Rate	9.5%

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		$2,979,457 (+2%) Land $2,367,593 Building $611,864
2025	$34,829.00 (+4.96%) Homeowner's exemption	$2,921,037 (+4.04%) Land $2,321,170 Building $599,867
2023	$33,182.00 (+7.11%) Homeowner's exemption	$2,807,611 Land $2,231,037 Building $576,574	$3,030,030
2022	$30,980.00

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.

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