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3142 Mount Diablo St, Concord, CA 94518 Property Records

Contra Costa County property record for 3142 Mount Diablo St, Concord, CA 94518

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,239 sqft · built 1953
Lot Size0.117 acres (5,115 sqft)
OwnerCompany Name on File
Tax Bill$2,373 (2025)
Deeds & MortgagesMay 2020 Transfer
Flood ZoneZone X (minimal risk)
APN105-187-024-2

Property Details

APN / Parcel Number

Primary APN105-187-024-2
Alternative APN
  • 105-187-024

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area1,239 sqft Living Area
1st Floor Area1,239 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1953
Effective Year BuiltEffective 1965
Lot Area5,115 sqft (0.117 acres)
Garage TypeAttached
Garage Area360 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Heating SystemForced Air with A/C

Location & Zoning

Street Address3142 MOUNT DIABLO ST
CityCONCORD
StateCA
Zip94518-1146
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR6
Legal DescriptionWILDEWOOD MANOR LOT 88
Legal SubdivisionWILDEWOOD MANOR
Legal Lot Number88
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2007
Census Tract335000

Owner

Source: Contra Costa County records, as of July 14, 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 RecordCompany Name on File
Mailing Address3142 MOUNT DIABLO ST, CONCORD, CA 94518-1146
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last Transfer DateJul 14, 2016
Transfer Doc0000192677
Record UpdatedSep 20, 2026

May 2020: Affidavit of Death, Transfer

Document TypeAffidavit of Death
JurisdictionCONTRA COSTA CA
Recording DateMay 12, 2020
Property Address3142 MOUNT DIABLO ST, CONCORD, CA 94518-1146
Document Number0000089824
Instrument DateFeb 8, 2020
Instrument89824
Transaction TypeTransfer
Record UpdatedMay 20, 2020
Title CompanyATTORNEY ONLY

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address3142 MOUNT DIABLO ST CONCORD CA 945181146, CONCORD, CA 94518-1146

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$139,152 (+2%) Land $41,786 Building $97,366
2025$2,373.00 (+6.7%) Homeowner's exemption$136,424 (+4.04%) Land $40,967 Building $95,457
2023$2,224.00 (+2.63%) Homeowner's exemption$131,128 Land $39,377 Building $91,751
2022$2,167.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 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
Community Rating SystemClass 7 (15% premium discount)
Nearby Flood Policies6 in force
Nearby Flood Claims3 (1980–1998)
Most Recent ClaimMar 1998 · Severe Winter Storms And Flooding
Claims by Event
  • Severe Winter Storms And Flooding, Mar 1998 · 2 claims

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 RiskNot rated
no burnable land within 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 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 672 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		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Astound Broadband
Cable		1,500 / 50
Unwired
Fixed Wireless		300 / 25
T-Mobile
Fixed Wireless		100 / 20

May also be available: Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Mount Diablo St

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