99 de Bell Dr, Atherton, CA 94027 Property Records

San Mateo County property record for 99 de Bell Dr, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,935 sqft · built 1946
Lot Size	0.742 acres (32,320 sqft)
Owner	2 Trust Names on File
Last Sale	$2,400,000 (Jun 2006)
Tax Bill	$42,117 (2025)
Deeds & Mortgages	Feb 2017 Transfer Feb 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`061-271-130`

Property Details

APN / Parcel Number

Primary APN	`061-271-130`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,935 sqft Living Area
1st Floor Area	2,110 sqft
2nd Floor Area	640 sqft
Family Room	Family Room
Study	Study

Exterior

Year Built	Built 1946
Effective Year Built	Effective 1946
Lot Area	32,320 sqft (0.742 acres)
Lot Dimensions	201 ft deep x 155 ft wide
View / Lot	Corner
Garage Area	1,447 sqft
Parking Spaces	5 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	99 DE BELL DR
City	ATHERTON
State	CA
Zip	94027-2209
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	LOT 13 MAPLE MANOR RSM 24/39 TOWN OF ATHERTON
Legal Subdivision	MAPLE MANOR
Legal Lot Number	13
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1001
Census Tract	611500

Owner

99 de Bell Dr is owner-occupied and held in a trust since February 2017.

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

Owner of Record	2 Trust Names on File
Mailing Address	99 DE BELL DR, ATHERTON, CA 94027-2209
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

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

Deeds, Mortgages & Sale History

Date	Document
Feb 9, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY
Feb 9, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 13, 2006 · Amount on File
Deed Sale	Jun 13, 2006 · Amount on File
Deed Document Number	200687580
Last Transfer Date	Feb 7, 2017
Transfer Doc	0000012674
Record Updated	Oct 29, 2026

February 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Feb 9, 2017
Property Address	99 DE BELL DR, ATHERTON, CA 94027-2209
Document Number	0000012675
Instrument Date	Feb 7, 2017
Instrument	12675
Transaction Type	Transfer
Record Updated	Mar 6, 2017
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	Personal Trust
Address	99 DE BELL DR ATHERTON CA 940272209, ATHERTON, CA 94027-2209

February 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Feb 9, 2017
Property Address	99 DE BELL DR, ATHERTON, CA 94027-2209
Document Number	0000012674
Instrument Date	Feb 7, 2017
Instrument	12674
Transaction Type	Transfer
Record Updated	Mar 6, 2017
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	Community Property
Address	99 DE BELL DR ATHERTON CA 940272209, ATHERTON, CA 94027-2209

Tax Assessment & Valuation

The 2025 property tax bill for 99 de Bell Dr was $42,117 with a homeowner's exemption.

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		$3,660,614 (+2%) Land $3,136,312 Building $524,302
2025	$42,117.00 Homeowner's exemption	$3,588,839 Land $3,074,816 Building $514,023
2023	$40,141.00 (+2.45%) Homeowner's exemption	$3,449,484 Land $2,955,418 Building $494,066	$5,347,440
2022	$39,181.00

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

Flood

FEMA maps place 99 de Bell Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 99 de Bell Dr is low, with 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 95% of the US · lower than 97% of California
Wildfire Likelihood	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 167 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Race Communications Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
AT&T Fiber · DSL	1,000 / 1,000
Verizon Fixed Wireless	300 / 20

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

Nearby Properties on de Bell Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

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