283 Stockbridge Ave, #283A, Atherton, CA 94027 Property Records

San Mateo County property record for 283 Stockbridge Ave, #283A, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	7 bd · 8.5 ba · 9,867 sqft · built 2020
Lot Size	1.55 acres (67,670 sqft)
Owner	2 Trust Names on File
Last Sale	$18,250,000 (Nov 2020)
Tax Bill	$218,554 (2025)
Deeds & Mortgages	Nov 2020 Sale Dec 2018 Construction Loan + 1 more
Flood Zone	Zone X (minimal risk)
APN	`070-012-430`

Property Details

APN / Parcel Number

Primary APN	`070-012-430`

Interior

Bedrooms	7 Beds
Full Baths	8.5 Baths
Half Baths	1 Half Bath
Total Rooms	16 Rooms
Stories	2 Stories
Building Area	9,867 sqft Living Area
1st Floor Area	5,254 sqft
2nd Floor Area	4,613 sqft
Basement Area	744 sqft
Family Room	Family Room

Exterior

Year Built	Built 2020
Effective Year Built	Effective 2020
Lot Area	67,670 sqft
Garage Area	857 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	283 STOCKBRIDGE AVE, 283A
City	ATHERTON
State	CA
Zip	94027-5444
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	67,645 SQ FT MOL BEING PAR C OF PARCEL MAP VOL 74/51-52
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3002
Census Tract	611400

Owner

283 Stockbridge Ave, #283A is owner-occupied and held in a trust since January 2025.

Source: San Mateo County records, as of July 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 Trust Names on File
Mailing Address	283 STOCKBRIDGE AVE, ATHERTON, CA 94027-5444
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 30, 2020	Grant Deed, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO
Dec 13, 2018	Trustee's Deed, Construction Loan · Construction Mortgage PRESIDIO BK
Nov 27, 2017	Grant Deed, Transfer FIDELITY NATIONAL TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 30, 2020 · Amount on File
Deed Sale	Nov 30, 2020 · Amount on File
Prior Sale	Nov 27, 2017 · Amount on File
Deed Document Number	2020136176
Last Transfer Date	Jan 20, 2025
Transfer Doc	0000003375
Record Updated	Sep 20, 2026

November 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Nov 30, 2020
Property Address	283 STOCKBRIDGE AVE, ATHERTON, CA 94027-5444
Document Number	0000136176
Instrument Date	Nov 18, 2020
Instrument	136176
Transaction Type	Transfer
Record Updated	Jan 7, 2021
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transaction

Amount	Amount on Record
Tax	$20,075.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	283 STOCKBRIDGE AVE ATHERTON CA 940275444, ATHERTON, CA 94027-5444

December 2018: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 13, 2018
Property Address	283 STOCKBRIDGE AVE, ATHERTON, CA 94027-5444
Instrument Date	Nov 16, 2018
Instrument	97076
Transaction Type	Construction Loan
Record Updated	Dec 31, 2018
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	23604 ESPERANZA DR LOS ALTOS CA 94022, LOS ALTOS, CA 94022

Mortgage

Document Number	0000097076
Date	Dec 13, 2018
Instrument	97076

Lender

Name	PRESIDIO BK
Type	Bank
Address	325 LYTTON AVE # 100, PALO ALTO, CA 94301-1490

Agreement

Type	Construction Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate

November 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Nov 27, 2017
Property Address	283 STOCKBRIDGE AVE, ATHERTON, CA 94027-5444
Document Number	0000105392
Instrument Date	Nov 13, 2017
Instrument	105392
Transaction Type	Transfer
Record Updated	Jan 3, 2018
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount on Record
Tax	$6,930.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	283 STOCKBRIDGE AVE ATHERTON CA 940275444, ATHERTON, CA 94027-5444

Tax Assessment & Valuation

The 2025 property tax bill for 283 Stockbridge Ave, #283A was $218,554 with a homeowner's exemption, up 1.2% 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	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		$20,149,473 (+2%) Land $9,108,666 Building $11,040,807
2025	$218,554.00 (+1.21%)	$19,754,386 Land $8,930,065 Building $10,824,321
2024	$215,942.00 (+1.58%)
2023	$212,587.00 (+2.85%) Homeowner's exemption	$18,987,300 Land $8,583,300 Building $10,404,000
2022	$206,691.00

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

Flood

FEMA maps place 283 Stockbridge Ave, #283A 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 283 Stockbridge Ave, #283A 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 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

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 601 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: Race Communications.

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