437 E Duane Ave, Sunnyvale, CA 94085 Property Records

Santa Clara County property record for 437 E Duane Ave, Sunnyvale, CA 94085

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,044 sqft · built 1950
Lot Size	0.138 acres (6,050 sqft)
Owner	2 Trust Names on Record
Last Sale	$563,000 (Apr 2013)
Tax Bill	$8,401 (2025)
Deeds & Mortgages	Jun 2020 Mortgage Jan 2017 Mortgage
Flood Zone	Zone X (reduced by levee)
APN	`204-16-004`

Property Details

APN / Parcel Number

Primary APN	`204-16-004`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,044 sqft Living Area
1st Floor Area	1,044 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1950
Architectural Style	Other
Construction Type	Wood
Lot Area	6,050 sqft (0.138 acres)
Lot Dimensions	110 ft deep x 55 ft wide
Garage Area	396 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	HVAC

Location & Zoning

Street Address	437 E DUANE AVE
City	SUNNYVALE
State	CA
Zip	94085-3705
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R0
Legal Description	TR 647 LOT 49
Legal Subdivision	SUNNYVALE MANOR ADD
Legal Tract	647
Legal Lot Number	49
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	1
Census Block	1017
Census Tract	509002

Owner

Source: Santa Clara County records, as of October 20, 2025

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

Owner of Record	2 Trust Names on Record
Co-owner	Co-owner on Record
Mailing Address	PO BOX 888, LOS ALTOS, CA 94023-0888
Owner Type	Individual
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jun 10, 2020	Deed of Trust, Mortgage · Conventional Mortgage FIRST REPUBLIC BANK
Jan 19, 2017	Intrafamily Transfer, Transfer · Conventional Mortgage FIRST REPUBLIC BANK

Assessor's Deed Record

Deed Names	3 Names on Deed
Last Sale	Apr 16, 2013 · Amount on Record
Deed Sale	Apr 16, 2013 · Amount on Record
Prior Sale	Apr 16, 2013 · Amount on Record
Deed Document Number	0022176803
Last Transfer Date	Jan 19, 2017
Transfer Doc	0023561360
Record Updated	Jun 8, 2026

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SANTA CLARA CA
Property Address	437 E DUANE AVE, SUNNYVALE, CA 94085-3705
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0024501299
Date	Jun 10, 2020
Instrument	24501299

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2050

January 2017: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SANTA CLARA CA
Recording Date	Jan 19, 2017
Property Address	437 E DUANE AVE, SUNNYVALE, CA 94085-3705
Document Number	0023561360
Map Reference	MAP24 PG41
Instrument Date	Jan 13, 2017
Instrument	23561360
Transaction Type	Transfer
Record Updated	Sep 1, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 888, LOS ALTOS, CA 94023-0888

Mortgage

Document Number	0023561361
Date	Jan 19, 2017
Instrument	23561361

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2047

Tax Assessment & Valuation

Source: Santa Clara County assessment roll, as of July 1, 2025

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
2025	$8,401.00 (+4.65%)	$693,284 (+4.04%) Land $570,146 Building $123,138
2023	$8,028.00 (+1.54%)	$666,364 Land $548,007 Building $118,357
2022	$7,906.00

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

FEMA Flood Zone	Zone X reduced by levee · depends on levee performance
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; 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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