84 Walnut Ave, Atherton, CA 94027 Property Records

San Mateo County property record for 84 Walnut Ave, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 3.5 ba · 3,832 sqft · built 1925
Lot Size	0.15 acres (6,550 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,000,000 (Aug 2017)
Tax Bill	$40,203 (2025)
Deeds & Mortgages	Jul 2019 Line of Credit Oct 2017 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`060-332-230`

Property Details

APN / Parcel Number

Primary APN	`060-332-230`

Interior

Bedrooms	5 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	3,832 sqft Living Area
Gross Area	5,084 sqft
1st Floor Area	1,290 sqft
2nd Floor Area	1,290 sqft
Basement Area	2,504 sqft
Finished Basement	1,252 sqft
Unfinished Basement	1,252 sqft
Family Room	Family Room
Study	Study
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1925
Effective Year Built	Effective 1925
Architectural Style	Bungalow
Exterior Material	Wood Siding
Roof Material	Composition Shingle
Lot Area	6,550 sqft (0.15 acres)
Lot Dimensions	131 ft deep x 50 ft wide
Garage Area	660 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	84 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 17 BLOCK B MENLO PARK VILLA LOTS RSM 1/93 TOWN OF ATHERTON
Legal Subdivision	MENLO PARK VILLA
Legal Block	B
Legal Lot Number	17
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 Individual Names on Record
Mailing Address	84 WALNUT AVE, ATHERTON, CA 94027-3821
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jul 2, 2019	Deed of Trust, Mortgage · Line of Credit CITIBANK NA
Oct 18, 2017	Deed of Trust, Mortgage · Line of Credit CITIBANK NA
Jun 8, 2022	Deed of Trust, Mortgage · Conventional Mortgage CITIBANK NA
Aug 2, 2017	Grant Deed, Transfer · ARM CITIBANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 2, 2017 · Amount on Record
Deed Sale	Aug 2, 2017 · Amount on Record
Prior Sale	May 28, 1997 · Amount on Record
Deed Document Number	201766492
Prior Transfer Date	Sep 11, 1998
Prior Transfer Doc	0000182533
Record Updated	Sep 20, 2026

July 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	84 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	TICOR TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000051153
Date	Jul 2, 2019
Instrument	2019-051153

Lender

Name	CITIBANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	84 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000091771
Date	Oct 18, 2017
Instrument	2017-091771

Lender

Name	CITIBANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Oct 17, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

June 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	84 WALNUT AVE, ATHERTON, CA 94027-3821
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	TICOR TTL ORANGE CNTY BRANCH

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	84 WALNUT AVE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000046382
Date	Jun 8, 2022
Instrument	2022-046382

Lender

Name	CITIBANK NA
Type	Bank
Address	O FALLON, MO 63368

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	2.87%
Type Change Date	Jul 1, 2032
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	7.87%
Index	Other
Max Rate	7.87%

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Aug 2, 2017
Property Address	84 WALNUT AVE, ATHERTON, CA 94027-3821
Document Number	0000066492
Map Reference	MAP1 PG93
Instrument Date	Jul 31, 2017
Instrument	2017-066492
Transaction Type	Transfer
Record Updated	Aug 5, 2022
Title Company	OLD REPUBLIC 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	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	84 WALNUT AVE, ATHERTON, CA 94027-3821

Mortgage

Document Number	0000066493
Date	Aug 2, 2017
Instrument	2017-066493

Lender

Name	CITIBANK NA
Type	Bank

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	3.12%
Type Change Date	Sep 1, 2027
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.12%
Index	1-Year LIBOR
Max Rate	8.12%

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		$3,481,752 (+2%) Land $2,176,095 Building $1,305,657
2025	$40,203.00 (+4.93%) Homeowner's exemption	$3,413,483 (+4.04%) Land $2,133,427 Building $1,280,056
2023	$38,314.00 (+2.45%) Homeowner's exemption	$3,280,935 Land $2,050,585 Building $1,230,350	$3,802,140
2022	$37,396.00

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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