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31 Mount Hamilton Ct, Clayton, CA 94517 Property Records

Contra Costa County property record for 31 Mount Hamilton Ct, Clayton, CA 94517

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 2,167 sqft · built 1971
Lot Size0.229 acres (9,975 sqft)
Owner2 Trust Names on File
Last Sale$284,000 (May 1998)
Tax Bill$6,278 (2025)
Flood ZoneZone X (minimal risk)
APN119-171-003-5

Property Details

APN / Parcel Number

Primary APN119-171-003-5
Alternative APN
  • 119-171-003

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms10 Rooms
Stories2 Stories
Building Area2,167 sqft Living Area
1st Floor Area1,265 sqft
2nd Floor Area902 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1971
Effective Year BuiltEffective 1972
Architectural StyleRanch
Exterior MaterialStucco
Roof MaterialComposition Shingle
Lot Area9,975 sqft (0.229 acres)
Garage TypeAttached
Garage Area466 sqft
Parking Spaces2 Parking Spaces
Deck AreaDeck Area

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address31 MT HAMILTON CT
CityCLAYTON
StateCA
Zip94517-1506
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionTRACT 4012 LOT 43 EX MR
Legal Tract4012
Legal Lot Number43
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group4
Census Block4004
Census Tract355306

Owner

31 Mount Hamilton Ct is owner-occupied and held in a trust since July 2009.

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

Owner of Record2 Trust Names on File
Mailing Address31 MT HAMILTON CT, CLAYTON, CA 94517-1506
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

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMay 11, 1998 · Amount on File
Deed SaleMay 11, 1998 · Amount on File
Deed Document Number1998103127
Last Transfer DateJul 16, 2009
Transfer Doc0000188391
Record UpdatedSep 20, 2026

Tax Assessment & Valuation

The 2025 property tax bill for 31 Mount Hamilton Ct was $6,278 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$462,518 (+2%) Land $170,997 Building $291,521
2025$6,278.00 Homeowner's exemption$453,450 Land $167,645 Building $285,805
2023$5,987.00 (+1.61%) Homeowner's exemption$435,843 Land $161,136 Building $274,707
2022$5,892.00

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

Flood

FEMA maps place 31 Mount Hamilton Ct in Zone X, an area of minimal flood risk.

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

FEMA Flood ZoneZone X
minimal risk
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 31 Mount Hamilton Ct is high, ranking above 76% of the US, with a 0.4% annual chance of wildfire.

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

Wildfire RiskHigh
above 76% of the US · above 53% of California
Wildfire Likelihood0.4% 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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