340 Walnut Ave, Walnut Creek, CA 94598 Property Records

Contra Costa County property record for 340 Walnut Ave, Walnut Creek, CA 94598

Property Summary

Property Type	Single Family Home
Details	6 bd · 4 ba · 3,284 sqft · built 1973
Lot Size	0.23 acres (10,000 sqft)
Owner	Company Name on Record
Last Sale	$560,500 (May 2012)
Tax Bill	$8,573 (2025)
Deeds & Mortgages	Jun 2021 Line of Credit Oct 2021 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`142-322-011-8`

Property Details

APN / Parcel Number

Primary APN	`142-322-011-8`
Alternative APN	`142-322-011`

Interior

Bedrooms	6 Beds
Full Baths	4 Baths
Total Rooms	13 Rooms
Stories	2 Stories
Building Area	3,284 sqft Living Area
Gross Area	3,739 sqft
1st Floor Area	1,854 sqft
2nd Floor Area	1,430 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1973
Effective Year Built	Effective 1977
Architectural Style	Ranch
Exterior Material	Stucco
Roof Material	Tile
Lot Area	10,000 sqft (0.23 acres)
Garage Type	Attached
Garage Area	455 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	340 WALNUT AVE
City	WALNUT CREEK
State	CA
Zip	94598-3375
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10
Legal Description	T04366 L0054 B
Legal Subdivision	SUBDIVISION 4366
Legal Tract	04366
Legal Lot Number	54
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2007
Census Tract	338301

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 Record	Company Name on Record
Mailing Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jun 30, 2021	Deed of Trust, Mortgage · Line of Credit US BANK NA
Oct 19, 2021	Intrafamily Transfer, Transfer
Jul 10, 2020	Deed of Trust, Mortgage · Conventional Mortgage SOFI LNDG

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 10, 2012 · Amount on Record
Deed Sale	May 10, 2012 · Amount on Record
Prior Sale	Jul 18, 2011 · Amount on Record
Deed Document Number	2012109332
Last Transfer Date	Oct 4, 2021
Transfer Doc	0000287200
Record Updated	Oct 29, 2026

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	RADIAN SETTLEMENT SERVICES

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375

Mortgage

Document Number	0000187904
Date	Jun 30, 2021
Instrument	2021-187904

Lender

Name	US BANK NA
Type	Bank
Address	CINCINNATI, OH 45202

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Jun 15, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 19, 2021
Property Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Document Number	0000287200
Map Reference	MB 157 PG 19
Instrument Date	Oct 4, 2021
Instrument	2021-287200
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	340 WALNUT AVE, WALNUT CREEK, CA 94598-3375
Document Number	0000172666
Instrument Date	Jul 10, 2020
Transaction Type	Mortgage
Record Updated	Aug 26, 2020
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	340 WALNUT AVE WALNUT CREEK CA 945983375, WALNUT CREEK, CA 94598-3375

Mortgage

Document Number	0000172666
Date	Aug 17, 2020
Instrument	172666

Lender

Name	SOFI LNDG
Address	COTTONWOOD HEIGHTS, UT 84121

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Aug 16, 2050

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Walnut Creek City
Unified School District	Mount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$717,575 (+2%) Land $448,021 Building $269,554
2025	$8,573.00 (+4.14%) Homeowner's exemption	$703,506 (+4.04%) Land $439,237 Building $264,269
2023	$8,232.00 (+0.89%) Homeowner's exemption	$676,190 Land $422,182 Building $254,008
2022	$8,159.00

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	1 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 Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None 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 System	CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003
Water Source	Surface water
Last State Inspection	Jan 2022
Lead	Under 1 ppb (2026–2028) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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

Provider	Max 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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