670 E Duane Ave, Sunnyvale, CA 94085 Property Records

Santa Clara County property record for 670 E Duane Ave, Sunnyvale, CA 94085

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,389 sqft · built 1953
Lot Size	0.119 acres (5,200 sqft)
Owner	Individual Name on Record
Last Sale	$1,600,000 (May 2022)
Tax Bill	$20,185 (2025)
Deeds & Mortgages	May 2022 Sale & Mortgage Jul 2020 Foreclosure + 3 more
Flood Zone	Zone X (reduced by levee)
APN	`205-18-009`

Property Details

APN / Parcel Number

Primary APN	`205-18-009`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,389 sqft Living Area
Gross Area	999 sqft
1st Floor Area	999 sqft

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1953
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	5,200 sqft (0.119 acres)
Lot Dimensions	100 ft deep x 52 ft wide
Garage Area	330 sqft
Parking Spaces	1 Parking Space
Porch	None

Utilities, Heating & Cooling

Cooling System	None

Location & Zoning

Street Address	670 E DUANE AVE
City	SUNNYVALE
State	CA
Zip	94085-3828
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R0
Legal Description	TRACT 927 FAIR OAKS PARK BOOK 40 PAGE 6 PAGE 7 LOT 137
Legal Subdivision	FAIR OAKS PARK
Legal Tract	927
Legal Lot Number	137
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	1
Census Block	1037
Census Tract	508708

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	Individual Name on Record
Mailing Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
May 9, 2022	Grant Deed, Transfer · Conventional Mortgage PNC BANK NA
Jul 7, 2020	Foreclosure OTHER
Jun 25, 2019	Deed of Trust, Mortgage · Conventional Mortgage N&K PROP A CALIFORNIA LLC
May 7, 2019	Deed of Trust, Mortgage · Conventional Mortgage N&K PROPERTIES LLC
Oct 9, 2018	Grant Deed, Transfer MERS FUND I

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 9, 2022 · Amount on Record
Deed Sale	May 9, 2022 · Amount on Record
Prior Sale	Jul 7, 2020 · Amount on Record
Deed Document Number	202225298142
Prior Transfer Date	Jan 4, 1996
Prior Transfer Doc	0013155865
Record Updated	Oct 29, 2026

May 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	May 9, 2022
Property Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Document Number	0025298142
Map Reference	MB 40 PG 6&7
Instrument Date	May 3, 2022
Instrument	25298142
Transaction Type	Transfer
Record Updated	Aug 22, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC 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	Notice of Trustee Sale Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2141 AVENIDA DE LAS FLORES, SANTA CLARA, CA 95054-1417

Mortgage

Document Number	0025298143
Date	May 9, 2022
Instrument	25298143

Lender

Name	PNC BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	3.5%
Type Change Date	Jun 1, 2029
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	8.5%
Index	Other
Margin	3
Max Rate	8.5%

July 2020: Foreclosure

Document Type	Foreclosure
Jurisdiction	SANTA CLARA CA
Recording Date	Jul 7, 2020
Property Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Document Number	0024527675
Instrument Date	Jul 1, 2020
Instrument	24527675
Transaction Type	Foreclosure
Record Updated	Jul 24, 2020
Title Company	OTHER

Transaction

Amount	Amount Recorded
Tax	$1,199.00
Amount Accuracy	Confirmed
Additional	Foreclosure Auction Notice of Trustee Sale

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	4970 EL CAMINO REAL #230 LOS ALTOS CA 940221461, 230, LOS ALTOS, CA 94022-1461

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Document Number	0024221744
Instrument Date	Jun 25, 2019
Transaction Type	Mortgage
Record Updated	Jul 22, 2019
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	670 E DUANE AVE SUNNYVALE CA 940853828, SUNNYVALE, CA 94085-3828

Mortgage

Document Number	0024221744
Date	Jul 9, 2019
Instrument	24221744

Lender

Name	N&K PROP A CALIFORNIA LLC

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

May 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Document Number	0024221746
Instrument Date	May 7, 2019
Transaction Type	Mortgage
Record Updated	Jul 22, 2019
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	670 E DUANE AVE SUNNYVALE CA 940853828, SUNNYVALE, CA 94085-3828

Mortgage

Document Number	0024221746
Date	Jul 9, 2019
Instrument	24221746

Lender

Name	N&K PROPERTIES LLC
Address	5450 THORNWOOD DR # L, SAN JOSE, CA 95123-1222

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

October 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	Oct 9, 2018
Property Address	670 E DUANE AVE, SUNNYVALE, CA 94085-3828
Document Number	0024039290
Instrument Date	Oct 4, 2018
Instrument	24039290
Transaction Type	Transfer
Record Updated	Oct 24, 2018
Title Company	LAWYERS TITLE

Transaction

Amount	Amount Recorded
Loan-to-Value (LTV)	LTV on Record
Tax	$715.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	670 E DUANE AVE SUNNYVALE CA 940853828, SUNNYVALE, CA 94085-3828

Mortgage

Document Number	24039291
Date	Oct 9, 2018
Instrument	24039291

Lender

Name	MERS FUND I
Address	MOUNTAIN VIEW, CA 94040

Agreement

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
Secondary School District	Fremont Union High School District (09 - 12)
Elementary School District	Sunnyvale Elementary School District (KG - 08)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,731,889 (+2%) Land $1,558,701 Building $173,188
2025	$20,185.00 (+4.69%)	$1,697,932 (+4.04%) Land $1,528,139 Building $169,793
2023	$19,280.00 (+33.9%)	$1,632,000 Land $1,468,800 Building $163,200
2022	$14,399.00

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 reduced by levee · depends on levee performance
Nearest Special Flood Hazard Area	Zone AO, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 10 individual policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	14 units insured incl. 4 condo units

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	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	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 840 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Sail Internet.

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