481 Walnut Ave, Walnut Creek, CA 94598 Property Records

Contra Costa County property record for 481 Walnut Ave, Walnut Creek, CA 94598

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,603 sqft · built 1961
Lot Size	0.229 acres (9,975 sqft)
Owner	2 Individual Names on File
Last Sale	$280,000 (Dec 1997)
Tax Bill	$5,738 (2025)
Flood Zone	Zone X (minimal risk)
APN	`140-012-011-7`

Property Details

APN / Parcel Number

Primary APN	`140-012-011-7`
Alternative APN	`140-012-011`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,603 sqft Living Area
Gross Area	2,078 sqft
1st Floor Area	1,603 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1961
Effective Year Built	Effective 1961
Architectural Style	Ranch
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	9,975 sqft (0.229 acres)
Lot Dimensions	105 ft deep x 95 ft wide
Garage Type	Attached
Garage Area	475 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Street Address	481 WALNUT AVE
City	WALNUT CREEK
State	CA
Zip	94598-3750
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10
Legal Description	TRACT 2895 129
Legal Tract	2895
Legal Lot Number	129
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3019
Census Tract	338302

Owner

Source: Contra Costa County records · APN 140-012-011-7

Assessment roll updated July 14, 2026 · Last verified July 2026

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

Owner of Record	2 Individual Names on File
Mailing Address	481 WALNUT AVE, WALNUT CREEK, CA 94598-3750
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Dec 30, 1997 · Amount on Record
Deed Sale	Dec 30, 1997 · Amount on Record
Deed Document Number	1997254199
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

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

Year	Tax Bill	Assessed Value
2026		$456,002 (+2%) Land $230,851 Building $225,151
2025	$5,738.00 (+4.33%) Homeowner's exemption	$447,062 (+4.04%) Land $226,325 Building $220,737
2023	$5,500.00 (+0.9%) Homeowner's exemption	$429,704 Land $217,538 Building $212,166
2022	$5,451.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	1 (1983)
Most Recent Claim	Dec 1983 · tidal / storm surge

Wildfire

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 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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Radiate Holdings Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL	100 / 20

May also be available: Sonic Telecom.

Based on FCC filings for 428 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	EAST BAY MUD serves 1,468,000 people
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.