1066 Castleton Way, Sunnyvale, CA 94087 Property Records

Santa Clara County property record for 1066 Castleton Way, Sunnyvale, CA 94087

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,933 sqft · built 1973
Lot Size	0.144 acres (6,277 sqft)
Owner	Company Name on Record
Last Sale	$2,520,000 (Jun 2022)
Tax Bill	$31,004 (2025)
Deeds & Mortgages	Jun 2022 Sale & Mortgage Nov 2021 Mortgage
Flood Zone	Zone X (moderate risk)
APN	`313-07-005`

Property Details

APN / Parcel Number

Primary APN	`313-07-005`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,933 sqft Living Area
1st Floor Area	1,933 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1973
Effective Year Built	Effective 1973
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	6,277 sqft (0.144 acres)
Lot Dimensions	110 ft deep x 57 ft wide
Garage Area	471 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch

Utilities, Heating & Cooling

Heating System	HVAC

Location & Zoning

Street Address	1066 CASTLETON WAY
City	SUNNYVALE
State	CA
Zip	94087-3707
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 5245 CAMINO DEL PRADO BOOK 310 PAGE 1 PAGE 2 LOT 3
Legal Subdivision	CAMINO DEL PRADO
Legal Tract	5245
Legal Lot Number	3
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	1
Census Block	1007
Census Tract	508205

Owner

Source: Santa Clara County records, as of July 27, 2026

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

Owner of Record	Company Name on Record
Mailing Address	1066 CASTLETON WAY, SUNNYVALE, CA 94087-3707
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Jun 1, 2022	Grant Deed, Transfer · Conventional Mortgage THE GOLDEN 1 CU
Nov 19, 2021	Deed of Trust, Mortgage · Commercial Mortgage ARTHUR JAMES SULLIVAN JR ETUX

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 1, 2022 · Amount on Record
Deed Sale	Jun 1, 2022 · Amount on Record
Deed Document Number	202225311759
Prior Transfer Date	Jan 12, 1996
Prior Transfer Doc	0013166019
Record Updated	Oct 29, 2026

June 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	Jun 1, 2022
Property Address	1066 CASTLETON WAY, SUNNYVALE, CA 94087-3707
Document Number	0025311759
Map Reference	MB 310 PG 1&2
Instrument Date	May 24, 2022
Instrument	25311759
Transaction Type	Transfer
Record Updated	Jun 8, 2022
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
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	Community Property with Right of Survivorship
Address	1066 CASTLETON WAY, SUNNYVALE, CA 94087-3707

Mortgage

Document Number	0025311761
Date	Jun 1, 2022
Instrument	25311761

Lender

Name	THE GOLDEN 1 CU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	3.87%
Type Change Date	Jun 1, 2029
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	8.87%
Index	1-Year CMT
Max Rate	8.87%

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	1066 CASTLETON WAY, SUNNYVALE, CA 94087-3707
Transaction Type	Mortgage
Record Updated	Dec 2, 2021
Title Company	STEWART TITLE, STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1066 CASTLETON WAY, SUNNYVALE, CA 94087-3707

Mortgage

Document Number	0025173577
Date	Nov 19, 2021
Instrument	25173577

Lender

Name	ARTHUR JAMES SULLIVAN JR ETUX
Type	Private Party

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Tax Assessment & Valuation

Source: Santa Clara County assessment roll, as of July 27, 2026

Property Jurisdictions

Type	Name
State	California
County	Santa Clara County
Municipality	Sunnyvale City
Unified School District	Santa Clara Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,727,726 (+2%) Land $2,591,341 Building $136,385
2025	$31,004.00 (+15.89%)	$2,674,242 (+17.81%) Land $2,540,531 Building $133,711
2023	$26,752.00 (+2,216.19%)	$2,270,000 Land $2,156,500 Building $113,500
2022	$1,155.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective January 18, 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
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 7 (15% 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 99.8% of the US · lower than 99.8% 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	CITY OF SUNNYVALE serves 157,566 people · EPA ID CA4310014
Water Source	Purchased surface water from several systems
Last State Inspection	Sep 2024
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	63 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 493 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Etheric Networks Fixed Wireless	250 / 100
Ridge Wireless Fixed Wireless	100 / 60
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, GeoLinks, Sail Internet, Verizon.

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