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320 Walnut Ave, Walnut Creek, CA 94598 Property Records

Contra Costa County property record for 320 Walnut Ave, Walnut Creek, CA 94598

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,968 sqft · built 1973
Lot Size0.23 acres (10,000 sqft)
Owner2 Company Names on Record
Last Sale$899,000 (Jun 2015)
Tax Bill$12,731 (2025)
Deeds & MortgagesNov 2021 Mortgage
Mar 2022 Transfer
Flood ZoneZone X (minimal risk)
APN142-322-009-2

Property Details

APN / Parcel Number

Primary APN142-322-009-2
Alternative APN
  • 142-322-009

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms10 Rooms
Stories1 Story
Building Area1,968 sqft Living Area
Gross Area2,388 sqft
1st Floor Area1,968 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1973
Effective Year BuiltEffective 1985
Architectural StyleRanch
Roof MaterialWood Shingle
Lot Area10,000 sqft (0.23 acres)
Lot Dimensions125 ft deep x 80 ft wide
Garage TypeAttached
Garage Area420 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Street Address320 WALNUT AVE
CityWALNUT CREEK
StateCA
Zip94598-3375
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR10
Legal DescriptionTRACT 4366 LOT 52
Legal SubdivisionSUBDIVISION 4366
Legal Tract4366
Legal Lot Number52
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2007
Census Tract338301

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Company Names on Record
Mailing Address320 WALNUT AVE, WALNUT CREEK, CA 94598-3375
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Nov 3, 2021Deed of Trust, Mortgage · Conventional Mortgage
JPMORGAN CHASE BANK NA
Mar 31, 2022Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleJun 8, 2015 · Amount on Record
Deed SaleJun 8, 2015 · Amount on Record
Deed Document Number2015115514
Prior Transfer DateJul 3, 1999
Prior Transfer Doc0000217470
Record UpdatedOct 29, 2026

November 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address320 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyNORTH AMERICAN TITLE CO INC

Transferred To (Grantee/Buyer)

NameVerified Name
Address320 WALNUT AVE, WALNUT CREEK, CA 94598-3375

Mortgage

Document Number0000306338
DateNov 3, 2021
Instrument2021-306338
Lender
NameJPMORGAN CHASE BANK NA
TypeBank
AddressFREMONT, OH 43420
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueNov 1, 2051

March 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateMar 31, 2022
Property Address320 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Document Number0000056526
Map ReferenceMB 157 PG 19
Instrument DateMar 16, 2022
Instrument2022-056526
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
Address320 WALNUT AVE, WALNUT CREEK, CA 94598-3375

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,102,064 (+2%) Land $615,637 Building $486,427
2025$12,731.00 (+4.04%) Homeowner's exemption$1,080,456 (+4.04%) Land $603,566 Building $476,890
2023$12,237.00 (+0.88%) Homeowner's exemption$1,038,503 Land $580,130 Building $458,373
2022$12,130.00

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 8 (10% premium discount)
Nearby Flood Policies1 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 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureNone
beyond 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 369 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Astound Broadband
Cable · Fiber in parts of the area		1,500 / 50
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
AT&T
DSL		100 / 20

May also be available: Etheric Networks, Sonic Telecom, T-Mobile.

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