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4 Altree Ct, Atherton, CA 94027 Property Records

San Mateo County property record for 4 Altree Ct, Atherton, CA 94027

Property Summary

Property TypeSingle Family Home
Details4 bd · 4.5 ba · 6,085 sqft · built 2007
Lot Size1.13 acres (49,359 sqft)
Owner2 Individual Names on Record
Last Sale$4,900,000 (Oct 2010)
Tax Bill$71,461 (2025)
Deeds & MortgagesDec 2020 Mortgage
Flood ZoneZone X (minimal risk)
APN061-240-070

Property Details

APN / Parcel Number

Primary APN061-240-070

Interior

Bedrooms4 Beds
Full Baths4.5 Baths
Half Baths1 Half Bath
Total Rooms11 Rooms
Stories2 Stories
Building Area6,085 sqft Living Area
1st Floor Area4,656 sqft
2nd Floor Area1,429 sqft
Family RoomFamily Room
StudyStudy
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 2007
Effective Year BuiltEffective 2007
Architectural StyleRanch
Exterior MaterialStucco
Roof MaterialWood Shingle
Lot Area49,359 sqft
Lot Dimensions214 ft deep x 223 ft wide
Garage Area887 sqft
Parking Spaces4 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address4 ALTREE CT
CityATHERTON
StateCA
Zip94027-2224
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1001A
Legal DescriptionLOT 5 ROBLE ESTATES RSM 49/32 TOWN OF ATHERTON
Legal SubdivisionROBLE ESTATES
Legal Lot Number5
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group1
Census Block1000
Census Tract611500

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 Record2 Individual Names on Record
Mailing Address4 ALTREE CT, ATHERTON, CA 94027-2224
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleOct 28, 2010 · Amount on Record
Deed SaleOct 28, 2010 · Amount on Record
Prior SaleNov 1, 1996 · Amount on Record
Deed Document Number2010127752
Last Transfer DateNov 13, 2020
Transfer Doc0000146202
Record UpdatedOct 29, 2026

December 2020: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateDec 16, 2020
Property Address4 ALTREE CT, ATHERTON, CA 94027-2224
Document Number0000146202
Map ReferenceMB 49 PG 32
Instrument DateNov 13, 2020
Instrument2020-146202
Transaction TypeTransfer
Record UpdatedAug 9, 2021
Title CompanySERVICELINK

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address4 ALTREE CT, ATHERTON, CA 94027-2224

Mortgage

Document Number0000146203
DateDec 16, 2020
Instrument2020-146203
Lender
NameUBS BANK USA
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueDec 1, 2050
Interest
Rate TypeAdjustable Rate
Rate2.75%
Type Change DateDec 1, 2030
Change FrequencyAnnually
Min Rate At Change2.25%
Max Rate At Change7.75%
Index1-Year LIBOR
Max Rate7.75%

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

TypeName
StateCalifornia
MunicipalityAtherton Town
CountySan Mateo County
Elementary School DistrictMenlo Park City Elementary School District (KG - 08)
Secondary School DistrictSequoia Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$6,403,314 (+2%) Land $3,201,657 Building $3,201,657
2025$71,461.00 (+4.84%) Homeowner's exemption$6,277,760 (+4.04%) Land $3,138,880 Building $3,138,880
2023$68,163.00 (+2.43%) Homeowner's exemption$6,033,990 Land $3,016,995 Building $3,016,995$5,857,650
2022$66,546.00

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies4 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 RiskLow
lower than 94% of the US · lower than 96% of California
Wildfire LikelihoodUnder 0.01% annual chance
ExposureDirect
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 SystemCALIFORNIA WATER SERVICE - BEAR GULCH
private · serves 60,382 people · EPA ID CA4110006
Water SourceSurface water
Last State InspectionFeb 2025
Lead4 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 273 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Sonic Telecom
Fiber		10,000 / 10,000
AT&T
Fiber · DSL · Fixed Wireless 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, Race Communications, T-Mobile.

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