Santa Clara County property record for 427 E Duane Ave, Sunnyvale, CA 94085
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,284 sqft · built 1950 |
| Lot Size | 0.139 acres (6,050 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $3,222 (2025) |
| Flood Zone | Zone X (reduced by levee) |
| APN | 204-16-006 |
| Primary APN | 204-16-006 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,284 sqft Living Area |
| 1st Floor Area | 1,284 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Exterior Material | Wood Siding |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 6,050 sqft (0.139 acres) |
| Lot Dimensions | 110 ft deep x 55 ft wide |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | None |
| Heating System | HVAC |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 427 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 | TRACT 647 SUNNYVALE MANOR ADD NO 1 BOOK 24 PAGE 41 LOT 51 |
| Legal Subdivision | SUNNYVALE MANOR ADD |
| Legal Tract | 647 |
| Legal Lot Number | 51 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1017 |
| Census Tract | 509002 |
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 | 2280 CALIFORNIA ST, 1, MOUNTAIN VIEW, CA 94040-1541 |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Mar 3, 2006 |
| Transfer Doc | 0018848152 |
| Record Updated | Sep 20, 2026 |
Source: Santa Clara County assessment roll, as of July 27, 2026
| 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $256,865 (+2%) Land $103,573 Building $153,292 | |
| 2025 | $3,222.00 (+4.47%) | $251,830 (+4.04%) Land $101,543 Building $150,287 |
| 2023 | $3,084.00 (+1.38%) | $242,052 Land $97,600 Building $144,452 |
| 2022 | $3,042.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
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.
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 |
| 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.
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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