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406 E Duane Ave, Sunnyvale, CA 94085 Property Records

Santa Clara County property record for 406 E Duane Ave, Sunnyvale, CA 94085

Property Summary

Property TypeSingle Family Home
Details3 bd · 1 ba · 1,804 sqft · built 1948
Lot Size0.164 acres (7,150 sqft)
OwnerCompany Name on File
Tax Bill$5,135 (2025)
Deeds & MortgagesFeb 2018 Transfer
Flood ZoneZone X (reduced by levee)
APN204-21-023

Property Details

APN / Parcel Number

Primary APN204-21-023

Interior

Bedrooms3 Beds
Full Baths1 Bath
Total Rooms6 Rooms
Stories1 Story
Building Area1,804 sqft Living Area
Gross Area1,746 sqft
1st Floor Area1,746 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1948
Effective Year BuiltEffective 1948
Architectural StyleCustom Design
Construction TypeWood
Lot Area7,150 sqft (0.164 acres)
Lot Dimensions110 ft deep x 65 ft wide
Garage TypeAttached
Garage Area378 sqft
Parking Spaces1 Parking Space
PorchPorch

Utilities, Heating & Cooling

Cooling SystemNone

Location & Zoning

Street Address406 E DUANE AVE
CitySUNNYVALE
StateCA
Zip94085-3702
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR0
Legal DescriptionTRACT 371 SUNNYVALE MANOR BOOK 13 PAGE 53 LOT 23
Legal SubdivisionSUNNYVALE MANOR
Legal Tract371
Legal Lot Number23
JurisdictionSANTA CLARA CA
Township / Civil DivisionSAN JOSE
Census Block Group2
Census Block2005
Census Tract509002

Owner

Source: Santa Clara County assessment roll, 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 RecordCompany Name on File
Mailing Address406 E DUANE AVE, SUNNYVALE, CA 94085-3702
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last Transfer DateFeb 27, 2017
Transfer Doc0023868069
Record UpdatedSep 20, 2026

February 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSANTA CLARA CA
Recording DateFeb 14, 2018
Property Address406 E DUANE AVE, SUNNYVALE, CA 94085-3702
Document Number0023868069
Instrument DateJan 27, 2018
Instrument23868069
Transaction TypeTransfer
Record UpdatedFeb 20, 2018

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipLiving Trust
Address406 E DUANE AVE SUNNYVALE CA 940853702, SUNNYVALE, CA 94085-3702

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountySanta Clara County
MunicipalitySunnyvale City
Secondary School DistrictFremont Union High School District (09 - 12)
Elementary School DistrictSunnyvale Elementary School District (KG - 08)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$430,313 (+2%) Land $266,754 Building $163,559
2025$5,135.00 (+4.65%) Homeowner's exemption$421,876 (+4.04%) Land $261,524 Building $160,352
2023$4,907.00 (+1.51%) Homeowner's exemption$405,496 Land $251,370 Building $154,126
2022$4,834.00

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 ZoneZone X
reduced by levee · depends on levee performance
Flood Insurance RequirementNot 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 RiskNot rated
no burnable land within ember reach

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCITY OF SUNNYVALE
serves 157,566 people · EPA ID CA4310014
Water SourcePurchased surface water from several systems
Last State InspectionSep 2024
LeadUnder 1 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting63
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

ProviderMax 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 Communications, LLC.
Fixed Wireless		250 / 100
T-Mobile USA
Fixed Wireless		100 / 20

May also be available: California Internet, Sail Internet Holdings.

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