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3148 Mount Diablo St, Concord, CA 94518 Property Records

Contra Costa County property record for 3148 Mount Diablo St, Concord, CA 94518

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,234 sqft · built 1954
Lot Size0.12 acres (5,225 sqft)
Owner2 Individual Names on File
Last Sale$506,000 (Mar 2006)
Tax Bill$7,997 (2025)
Deeds & MortgagesFeb 2020 Mortgage
Flood ZoneZone X (minimal risk)
APN105-187-023-4

Property Details

APN / Parcel Number

Primary APN105-187-023-4
Alternative APN
  • 105-187-023

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Stories1 Story
Building Area1,234 sqft Living Area
Gross Area1,594 sqft
1st Floor Area1,234 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1954
Effective Year BuiltEffective 1954
Architectural StyleRanch
Exterior MaterialStucco
Construction TypeFrame
Roof MaterialComposition Shingle
Lot Area5,225 sqft (0.12 acres)
Garage TypeAttached
Garage Area360 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemWall Unit
Heating SystemForced Air with A/C
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address3148 MOUNT DIABLO ST
CityCONCORD
StateCA
Zip94518-1146
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR6
Legal DescriptionWILDEWOOD MANOR #1 LOT 87
Legal SubdivisionWILDEWOOD MANOR UN
Legal Lot Number87
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 Record2 Individual Names on File
Mailing Address3148 MOUNT DIABLO ST, CONCORD, CA 94518-1146
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMar 23, 2006 · Amount on File
Deed SaleMar 23, 2006 · Amount on File
Prior SaleJun 12, 1998 · Amount on File
Deed Document Number200688308
Record UpdatedOct 29, 2026

February 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address3148 MOUNT DIABLO ST, CONCORD, CA 94518-1146
Document Number0000042443
Instrument DateFeb 29, 2020
Transaction TypeMortgage
Record UpdatedMar 18, 2020
Title CompanyFIDELITY NATIONAL TITLE, FIDELITY TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants with Right of Survivorship
Address3148 MOUNT DIABLO ST CONCORD CA 945181146, CONCORD, CA 94518-1146

Mortgage

Document Number0000042443
DateMar 5, 2020
Instrument42443
Lender
NameBAY EQUITY
TypeFunding / Finance Company
AddressCORTE MADERA, CA 94925
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term360 Months
DueMar 4, 2050

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$640,000 (-0.93%) Land $440,923 Building $199,077
2025$7,997.00 (+7.91%) Homeowner's exemption$646,000 (-2.8%) Land $445,056 Building $200,944
2023$7,411.00 (-7.57%) Homeowner's exemption$664,624 Land $457,886 Building $206,738
2022$8,018.00

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

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