261 Atherton Ave, Atherton, CA 94027 Property Records

San Mateo County property record for 261 Atherton Ave, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 4,120 sqft · built 1956
Lot Size	0.976 acres (42,494 sqft)
Owner	2 Company Names on File
Last Sale	$9,000,000 (May 2021)
Tax Bill	$157,158 (2025)
Deeds & Mortgages	Aug 2026 Mortgage Aug 2023 Construction Loan + 4 more
Flood Zone	Zone X (minimal risk)
APN	`070-151-010`

Property Details

APN / Parcel Number

Primary APN	`070-151-010`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Total Rooms	11 Rooms
Stories	1 Story
Building Area	4,120 sqft Living Area
1st Floor Area	3,390 sqft
2nd Floor Area	730 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1956
Architectural Style	Ranch
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	42,494 sqft (0.976 acres)
Lot Dimensions	205 ft deep x 208 ft wide
View / Lot	Corner
Garage Area	910 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	261 ATHERTON AVE
City	ATHERTON
State	CA
Zip	94027-5454
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	LOT 4 JESSUP ORCHARD RSM 43/15 TOWN OF ATHERTON
Legal Subdivision	JESSUP ORCHARD
Legal Lot Number	4
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2009
Census Tract	611400

Owner

261 Atherton Ave is owned by a company that bought it in May 2021.

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Company Names on File
Mailing Address	525 MARKET ST, 11, SAN FRANCISCO, CA 94105-2719
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Aug 13, 2026	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK
Aug 9, 2023	Deed of Trust, Mortgage · Construction Mortgage AVIDBANK
Mar 17, 2026	Deed of Trust, Mortgage · Commercial Mortgage THE ANDREW B MARTIN AND MARINA H MARTIN
Sep 28, 2020	Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA
May 28, 2021	Grant Deed, Transfer LAWYERS TITLE COMPANY
Jun 18, 2019	Deed of Trust, Mortgage WELLS FARGO BK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 28, 2021 · Amount on File
Deed Sale	May 28, 2021 · Amount on File
Prior Sale	Jun 11, 2007 · Amount on File
Deed Document Number	202183949
Prior Transfer Date	Dec 11, 2014
Prior Transfer Doc	0000117196
Record Updated	Oct 29, 2026

August 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Recording Date	Aug 13, 2026
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Document Number	0000045867
Instrument Date	Aug 6, 2026
Instrument	202645867
Transaction Type	Mortgage
Record Updated	Sep 15, 2026
Title Company	TOP PRIORITY TITLE, PRIORITY TITLE

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Trust, 212

Mortgage

Document Number	0000045867,
Date	Aug 13, 2026
Instrument	202645867

Lender

Name	JPMORGAN CHASE BANK

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Sep 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	5.5%
Initial Type	Adjustable Rate
Adjustable	Adjustable Rate Rider
Max Rate	-1%

August 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Transaction Type	Mortgage
Record Updated	Jun 8, 2026
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	122 ATHERTON AVE, ATHERTON, CA 94027-4021

Mortgage

Document Number	0000038191
Date	Aug 9, 2023
Instrument	2023-038191

Lender

Name	AVIDBANK
Type	Bank
Address	SAN JOSE, CA 95112

Agreement

Type	Construction Mortgage
Amount	Amount on Record

March 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Transaction Type	Mortgage
Record Updated	Jun 8, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	122 ATHERTON AVE, ATHERTON, CA 94027-4021

Mortgage

Document Number	0000013248
Date	Mar 17, 2026
Instrument	2026-013248

Lender

Name	THE ANDREW B MARTIN AND MARINA H MARTIN
Type	Private Party

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Transaction Type	Mortgage
Record Updated	Oct 18, 2022
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454

Mortgage

Document Number	0000102123
Date	Sep 28, 2020
Instrument	2020-102123

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	Oct 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	2.75%
Type Change Date	Oct 1, 2027
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	4.75%
Index	1-Year LIBOR
Max Rate	7.75%

May 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 28, 2021
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Document Number	0000083949
Map Reference	MB 43 PG 15
Instrument Date	May 19, 2021
Instrument	2021-083949
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	LAWYERS TITLE COMPANY

Transaction

Amount	Amount on Record
Tax	$9,900.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	122 ATHERTON AVE, ATHERTON, CA 94027-4021
Investor	Possibly a Property Investor

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	261 ATHERTON AVE, ATHERTON, CA 94027-5454
Document Number	0000048329
Instrument Date	Jun 18, 2019
Transaction Type	Mortgage
Record Updated	Jul 17, 2019
Title Company	STEWART TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	261 ATHERTON AVE ATHERTON CA 940275454, ATHERTON, CA 94027-5454

Mortgage

Document Number	0000048329
Date	Jun 24, 2019
Instrument	48329

Lender

Name	WELLS FARGO BK
Type	Bank
Address	101 N PHILLIPS AVE, SIOUX FALLS, SD 57104-6738

Agreement

Amount	Amount on Record
Term	360 Months
Due	Jun 23, 2049

Interest

Rate Type	Adjustable Rate
Rate	2.87%

Tax Assessment & Valuation

The 2025 property tax bill for 261 Atherton Ave was $157,158, up 37.5% from the year before.

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
2026		$18,585,646 (+31.59%) Land $8,832,646 Building $9,753,000
2025	$157,158.00 (+37.53%)	$14,123,457 Land $8,659,457 Building $5,464,000
2024	$114,270.00 (+9.52%)
2023	$104,338.00 (+2.42%)	$9,363,600 Land $8,323,200 Building $1,040,400
2022	$101,876.00

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

Flood

FEMA maps place 261 Atherton Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1995.

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 13 policies
Nearby Flood Policies	13 in force
Nearby Flood Claims	2 (1995–1998)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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 261 Atherton Ave is low, with less than a 0.01% annual chance of 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 136 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.

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