1860 Sunnyvale Ave, Walnut Creek, CA 94597 Property Records

Contra Costa County property record for 1860 Sunnyvale Ave, Walnut Creek, CA 94597

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,172 sqft · built 1947
Lot Size	0.201 acres (8,755 sqft)
Owner	2 Individual Names on File
Last Sale	$965,000 (Dec 2021)
Tax Bill	$6,276 (2025)
Deeds & Mortgages	Dec 2021 Sale & Mortgage Jan 2017 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`170-260-019-6`

Property Details

APN / Parcel Number

Primary APN	`170-260-019-6`
Alternative APNs	`170-260-051` `170-260-019` `1702600519`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,172 sqft Living Area
1st Floor Area	1,172 sqft

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1975
Lot Area	8,755 sqft (0.201 acres)
Garage Type	Attached
Garage Area	525 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	1860 SUNNYVALE AVE
City	WALNUT CREEK
State	CA
Zip	94597-1812
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R8
Legal Description	HOOK ESTATE SUBN #1 POR LOT 14
Legal Subdivision	HOOK ESTATE SUB
Legal Lot Number	14
Jurisdiction	CONTRA COSTA CA

Owner

1860 Sunnyvale Ave is owned by two individuals who acquired it in July 2023.

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

Owner of Record	2 Individual Names on File
Mailing Address	164 BELLE AVE, PLEASANT HILL, CA 94523-4640
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Dec 28, 2021	Grant Deed, Transfer · Conventional Mortgage PLATINUM HOME MORTGAGE CORP
Jan 9, 2017	Affidavit of Death, Transfer FIRST AMERICAN TITLE
Jan 9, 2017	Grant Deed, Transfer FIRST AMERICAN TITLE COMPANY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 28, 2021 · Amount on File
Deed Sale	Dec 28, 2021 · Amount on File
Deed Document Number	2021347144
Last Transfer Date	Jul 21, 2023
Transfer Doc	0000071299
Record Updated	Sep 20, 2026

December 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 28, 2021
Property Address	1860 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000347144
Map Reference	MB 11 PG 255
Instrument Date	Dec 16, 2021
Instrument	2021-347144
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	164 BELLE AVE, PLEASANT HILL, CA 94523-4640

Mortgage

Document Number	0000347145
Date	Dec 28, 2021
Instrument	2021-347145

Lender

Name	PLATINUM HOME MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2052

January 2017: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 9, 2017
Property Address	1860 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000004138
Instrument Date	Jan 3, 2017
Instrument	4138
Transaction Type	Transfer
Record Updated	Jan 16, 2017
Title Company	FIRST AMERICAN TITLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1860 SUNNYVALE AVE WALNUT CREEK CA 945971812, WALNUT CREEK, CA 94597-1812

January 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 9, 2017
Property Address	1860 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000004139
Map Reference	MB11 PG255
Instrument Date	Jan 3, 2017
Instrument	2017-004139
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	1860 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812

Tax Assessment & Valuation

The 2025 property tax bill for 1860 Sunnyvale Ave was $6,276.

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		$498,037 Land $357,321 Building $140,716
2025	$6,276.00
2023	$11,746.00 (+0.87%)	$984,300 Land $851,700 Building $132,600
2022	$11,645.00

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

Flood

FEMA maps place 1860 Sunnyvale Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

The area around 1860 Sunnyvale Ave has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not 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 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 460 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
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Sonic Telecom.

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