1770 Sunnyvale Ave, Walnut Creek, CA 94597 Property Records

Contra Costa County property record for 1770 Sunnyvale Ave, Walnut Creek, CA 94597

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,627 sqft · built 1986
Lot Size	0.276 acres (12,000 sqft)
Owner	2 Individual Names on File
Last Sale	$1,625,000 (Sep 2026)
Tax Bill	$11,855 (2025)
Deeds & Mortgages	Sep 2026 Sale & Mortgage Nov 2020 Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`170-260-044-4`

Property Details

APN / Parcel Number

Primary APN	`170-260-044-4`
Alternative APN	`170-260-044`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,627 sqft Living Area
1st Floor Area	1,446 sqft
2nd Floor Area	1,181 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1986
Effective Year Built	Effective 1987
Architectural Style	Traditional
Roof Material	Composition Shingle
Lot Area	12,000 sqft (0.276 acres)
Garage Type	Attached
Garage Area	624 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	1770 SUNNYVALE AVE
City	WALNUT CREEK
State	CA
Zip	94597-1810
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R8
Legal Description	PCL MAP 123 PG 39 PCL B
Legal Subdivision	PRICE PARK
Legal Tract	123PM39
Legal Lot Number	5
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2003
Census Tract	340001

Owner

1770 Sunnyvale Ave is owned by two individuals who bought it in September 2026.

Source: Contra Costa County records, as of September 22, 2026

Owner of Record	2 Individual Names on File
Mailing Address	1772 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810
Owner Type	Individual
Vesting	Joint Tenants

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
Sep 8, 2026	Grant Deed, Transfer · Conventional Mortgage REALTY MORTGAGE LLC
Nov 4, 2020	Deed of Trust, Mortgage · Conventional Mortgage LENDUS LLC
Oct 19, 2018	Quit Claim Deed, Transfer · Conventional Mortgage CASHCALL

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 8, 2026 · Amount on File
Deed Sale	Sep 8, 2026 · Amount on File
Prior Sale	Feb 19, 2010 · Amount on File
Deed Document Number	202694383
Prior Transfer Date	Oct 8, 2018
Prior Transfer Doc	0000166005
Record Updated	Oct 29, 2026

September 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 8, 2026
Property Address	1770 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810
Document Number	0000094383
Instrument Date	Aug 21, 2026
Instrument	202694383
Transaction Type	Transfer
Record Updated	Sep 15, 2026
Title Company	CHICAGO TITLE W, CHICAGO TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$180,537.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1772 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810

Mortgage

Document Number	0000094384,
Date	Sep 8, 2026
Instrument	202694384

Lender

Name	REALTY MORTGAGE LLC

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Oct 1, 2056

Interest

Rate Type	Fixed Rate
Initial Type	Fixed Rate
Max Rate	-1%

November 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1770 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1770 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810

Mortgage

Document Number	0000261556
Date	Nov 4, 2020
Instrument	2020-261556

Lender

Name	LENDUS LLC
Type	Mortgage Company
Address	ALAMO, CA 94507

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Nov 1, 2050

October 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 19, 2018
Property Address	1770 SUNNYVALE AVE, WALNUT CREEK, CA 94597-1810
Document Number	0000166005
Instrument Date	Oct 8, 2018
Instrument	166005
Transaction Type	Transfer
Record Updated	Oct 30, 2018
Title Company	ORANGE COAST TITLE COMPANY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1770 SUNNYVALE AVE WALNUT CREEK CA 945971810, WALNUT CREEK, CA 94597-1810

Mortgage

Document Number	166006
Date	Oct 19, 2018
Instrument	166006

Lender

Name	CASHCALL
Type	Funding / Finance Company
Address	IRVINE, CA 92612

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Oct 18, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 1770 Sunnyvale Ave was $11,855.

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		$1,021,171 (+2%) Land $475,629 Building $545,542
2025	$11,855.00 Homeowner's exemption	$1,001,149 Land $466,303 Building $534,846
2023	$11,393.00 (+0.89%) Homeowner's exemption	$962,275 Land $448,197 Building $514,078
2022	$11,293.00

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

Flood

FEMA maps place 1770 Sunnyvale Ave in Zone X, an area of moderate flood risk, within 100 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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	2 (1998–2012)
Claims Outside the SFHA	2 of 2
Most Recent Claim	Nov 2012 · rainfall accumulation

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

Wildfire risk around 1770 Sunnyvale Ave is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood	Under 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 486 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL · Fixed Wireless in parts of the area	5,000 / 5,000
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

May also be available: Sonic Telecom.

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