450 Walnut Ave, Walnut Creek, CA 94598 Property Records

Contra Costa County property record for 450 Walnut Ave, Walnut Creek, CA 94598

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,968 sqft · built 1974
Lot Size	0.23 acres (10,000 sqft)
Owner	2 Company Names on Record
Last Sale	$1,072,000 (Jun 2020)
Tax Bill	$13,825 (2025)
Deeds & Mortgages	Feb 2026 Transfer Jun 2020 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`142-312-003-7`

Property Details

APN / Parcel Number

Primary APN	`142-312-003-7`
Alternative APN	`142-312-003`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	1,968 sqft Living Area
1st Floor Area	1,968 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1974
Effective Year Built	Effective 1975
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	10,000 sqft (0.23 acres)
Garage Type	Attached
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Street Address	450 WALNUT AVE
City	WALNUT CREEK
State	CA
Zip	94598-3377
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10
Legal Description	TRACT 4366 LOT 8
Legal Subdivision	SUBDIVISION 4366
Legal Tract	4366
Legal Lot Number	8
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	2 Company Names on Record
Mailing Address	1980 ASCOT DR, MORAGA, CA 94556-1449
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Feb 17, 2026	Intrafamily Transfer, Transfer
Jun 29, 2020	Grant Deed, Transfer · Conventional Mortgage QUICKEN LNS
Mar 8, 2019	Affidavit of Death, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 29, 2020 · Amount on Record
Deed Sale	Jun 29, 2020 · Amount on Record
Deed Document Number	2020127414
Prior Transfer Date	Sep 26, 2002
Prior Transfer Doc	0000364522
Record Updated	Sep 20, 2026

February 2026: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 17, 2026
Property Address	450 WALNUT AVE, WALNUT CREEK, CA 94598-3377
Document Number	0000015475
Map Reference	MB 157 PG 19
Instrument Date	Feb 12, 2026
Instrument	2026- 015475
Transaction Type	Transfer
Record Updated	Feb 26, 2026

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1980 ASCOT DR, MORAGA, CA 94556-1449

June 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 29, 2020
Property Address	450 WALNUT AVE, WALNUT CREEK, CA 94598-3377
Document Number	0000127414
Instrument Date	Jun 18, 2020
Instrument	127414
Transaction Type	Transfer
Record Updated	Jul 10, 2020
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,179.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	450 WALNUT AVE WALNUT CREEK CA 945983377, WALNUT CREEK, CA 94598-3377

Mortgage

Document Number	127415
Date	Jun 29, 2020
Instrument	127415

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 28, 2050

March 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 8, 2019
Property Address	450 WALNUT AVE, WALNUT CREEK, CA 94598-3377
Document Number	0000031989
Instrument Date	Jan 23, 2019
Instrument	31989
Transaction Type	Transfer
Record Updated	Mar 18, 2019
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	3138 LAKE DR MARINA CA 939332822, MARINA, CA 93933-2822

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		$1,195,831 (+2%) Land $780,861 Building $414,970
2025	$13,825.00 (+3.99%)	$1,172,384 (+4.04%) Land $765,550 Building $406,834
2023	$13,294.00 (+0.87%)	$1,126,861 Land $735,824 Building $391,037
2022	$13,179.00

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 575 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

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

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