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1 Mount Wilson Way, Clayton, CA 94517 Property Records

Contra Costa County property record for 1 Mount Wilson Way, Clayton, CA 94517

Property Summary

Property TypeTownhouse
Details2 bd · 2 ba · 1,075 sqft · built 1973
Lot Size0.048 acres (2,080 sqft)
OwnerTrust Name on File
Last Sale$445,000 (Jun 2007)
Tax Bill$7,826 (2025)
Deeds & MortgagesJul 2020 Mortgage
Sep 2019 Mortgage
+ 1 more
Flood ZoneZone X (minimal risk)
APN119-232-049-5

Property Details

APN / Parcel Number

Primary APN119-232-049-5
Alternative APN
  • 119-232-049

Interior

Bedrooms2 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area1,075 sqft Living Area
1st Floor Area1,075 sqft

Exterior

Year BuiltBuilt 1973
Effective Year BuiltEffective 1985
Architectural StyleTownhouse
Lot Area2,080 sqft (0.048 acres)
Garage TypeAttached
Garage Area469 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address1 MT WILSON WAY
CityCLAYTON
StateCA
Zip94517-1642
Property CategoryResidential
Property TypeResidential > Condominium / Townhouse > Townhouse
Local Zoning CodePUD
Legal DescriptionT04240 L0109 B
Legal SubdivisionMARSH CREE SUB 4240
Legal Tract04240
Legal Lot Number109
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group4
Census Block4002
Census Tract355306

Owner

1 Mount Wilson Way, a townhouse, is owner-occupied and held in a trust since August 2017.

Source: Contra Costa County records, as of July 14, 2026

Owner of RecordTrust Name on File
Mailing Address1 MT WILSON WAY, CLAYTON, CA 94517-1642
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

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

DateDocument
Jul 16, 2020Deed of Trust, Mortgage · Conventional Mortgage
GUILD MORTGAGE CO
Sep 30, 2019Deed of Trust, Mortgage · Conventional Mortgage
GUILD MORTGAGE CO
Aug 7, 2017Quit Claim Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJun 8, 2007 · Amount on File
Deed SaleJun 8, 2007 · Amount on File
Prior SaleAug 4, 1999 · Amount on File
Deed Document Number2007166959
Last Transfer DateAug 2, 2017
Transfer Doc0000141594
Record UpdatedOct 29, 2026

July 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address1 MT WILSON WAY, CLAYTON, CA 94517-1642
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE CO

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000141923
DateJul 16, 2020
Instrument2020-141923
Lender
NameGUILD MORTGAGE CO
TypeMortgage Company
AddressSAN DIEGO, CA 92111
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueAug 1, 2050

September 2019: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address1 MT WILSON WAY, CLAYTON, CA 94517-1642
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000163850
DateSep 30, 2019
Instrument2019-163850
Lender
NameGUILD MORTGAGE CO
TypeMortgage Company
AddressSAN DIEGO, CA 92111
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueOct 1, 2049

August 2017: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateAug 7, 2017
Property Address1 MT WILSON WAY, CLAYTON, CA 94517-1642
Document Number0000141594
Instrument DateAug 2, 2017
Instrument141594
Transaction TypeTransfer
Record UpdatedAug 11, 2017
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
Address1 MT WILSON WAY CLAYTON CA 945171642, CLAYTON, CA 94517-1642

Tax Assessment & Valuation

The 2025 property tax bill for 1 Mount Wilson Way was $7,826 with a homeowner's exemption.

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityClayton City
Unified School DistrictMount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$555,000 (-6.91%) Land $339,237 Building $215,763
2025$7,826.00 Homeowner's exemption$596,189 Land $364,413 Building $231,776
2023$7,477.00 (+1.48%) Homeowner's exemption$573,040 Land $350,263 Building $222,777
2022$7,368.00

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

Flood

FEMA maps place 1 Mount Wilson Way in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood ZoneZone X
minimal risk
Nearest Special Flood Hazard AreaZone AE, within 500 ft
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 1 Mount Wilson Way is moderate, ranking above 56% of the US, with a 0.1% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskModerate
above 56% of the US · lower than 66% of California
Wildfire Likelihood0.1% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 SystemCONTRA COSTA WATER DISTRICT
serves 210,500 people · EPA ID CA0710003
Water SourceSurface water
Last State InspectionJan 2022
LeadUnder 1 ppb (2026–2028)
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 420 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

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