1838 Sunnyvale Ave, Walnut Creek, CA 94597 Property Records

Contra Costa County property record for 1838 Sunnyvale Ave, Walnut Creek, CA 94597

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,214 sqft · built 1965
Lot Size	0.253 acres (11,016 sqft)
Owner	2 Trust Names on File
Last Sale	$1,410,000 (Oct 2025)
Tax Bill	$14,405 (2025)
Deeds & Mortgages	Oct 2025 Sale & Mortgage Sep 2023 Transfer + 3 more
Flood Zone	Zone X (minimal risk)
APN	`170-260-025-3`

Property Details

APN / Parcel Number

Primary APN	`170-260-025-3`
Alternative APN	`170-260-025`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,214 sqft Living Area
1st Floor Area	2,214 sqft

Exterior

Year Built	Built 1965
Effective Year Built	Effective 1965
Lot Area	11,016 sqft (0.253 acres)
Garage Type	Attached
Garage Area	528 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	1838 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 15
Legal Subdivision	HOOK ESTATE SUB
Legal Lot Number	15
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1005
Census Tract	340001

Owner

1838 Sunnyvale Ave is held in a trust since October 2025.

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

Owner of Record	2 Trust Names on File
Mailing Address	82 BLACKHAWK CLUB CT, DANVILLE, CA 94506-4513
Owner Type	Company
Vesting	Trust

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
Oct 9, 2025	Grant Deed, Transfer · Conventional Mortgage NEWREZ LLC
Sep 19, 2023	Intrafamily Transfer, Transfer
Sep 19, 2023	Intrafamily Transfer, Transfer
Mar 13, 2023	Intrafamily Transfer, Transfer
Mar 13, 2023	Affidavit of Death of Joint Tenant, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 9, 2025 · Amount on File
Deed Sale	Oct 9, 2025 · Amount on File
Deed Document Number	2025106093
Prior Transfer Date	Jan 11, 1994
Prior Transfer Doc	0000066945
Record Updated	Oct 29, 2026

October 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 9, 2025
Property Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000106093
Map Reference	VOL 11 PG 255
Instrument Date	Oct 6, 2025
Instrument	2025- 106093
Transaction Type	Transfer
Record Updated	Oct 21, 2025
Title Company	PLACER 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
Address	82 BLACKHAWK CLUB CT, DANVILLE, CA 94506-4513

Mortgage

Document Number	0000106094
Date	Oct 9, 2025
Instrument	2025- 106094

Lender

Name	NEWREZ LLC
Type	Mortgage Company
Address	1100 VIRGINIA DR STE 125, FORT WASHINGTON, PA 19034

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2055

September 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 19, 2023
Property Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000090632
Map Reference	VOL 11 PG 255
Instrument Date	Sep 6, 2023
Instrument	2023-090632
Transaction Type	Transfer
Record Updated	Sep 29, 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
Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812

September 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 19, 2023
Property Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000090631
Map Reference	VOL 11 PG 255
Instrument Date	Sep 6, 2023
Instrument	2023-090631
Transaction Type	Transfer
Record Updated	Sep 29, 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
Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812

March 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 13, 2023
Property Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000023513
Map Reference	MB 11 PG 255
Instrument Date	Mar 2, 2023
Instrument	2023-023513
Transaction Type	Transfer
Record Updated	Sep 29, 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	Joint Tenants
Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812

March 2023: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 13, 2023
Property Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812
Document Number	0000023512
Map Reference	MB 11 PG 255
Instrument Date	Feb 7, 2023
Instrument	2023-023512
Transaction Type	Transfer
Record Updated	Sep 29, 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
Address	1838 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1812

Tax Assessment & Valuation

The 2025 property tax bill for 1838 Sunnyvale Ave was $14,405.

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		$1,410,000 (+15.1%) Land $850,000 Building $560,000
2025	$14,405.00	$1,225,000 Land $805,000 Building $420,000
2023	$4,790.00 (+0.86%)	$358,224 Land $101,503 Building $256,721
2022	$4,749.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 1838 Sunnyvale Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 15 policies
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	15 in force
Nearby Flood Claims	4 (1997–2022)
Claims Outside the SFHA	2 of 4
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides

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

The area around 1838 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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