Santa Clara County property record for 813 Duff Ct, Sunnyvale, CA 94086
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 1.5 ba · 1,868 sqft · built 1953 |
| Lot Size | 0.23 acres (10,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $308,500 (Apr 1996) |
| Tax Bill | $5,954 (2025) |
| Deeds & Mortgages | Dec 2025 Transfer |
| Flood Zone | Zone X (moderate risk) |
| APN | 211-11-034 |
| Primary APN | 211-11-034 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,868 sqft Living Area |
| 1st Floor Area | 1,868 sqft |
| Utility Room | Utility Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 10,000 sqft (0.23 acres) |
| Lot Dimensions | 100 ft deep x 100 ft wide |
| Garage Area | 280 sqft |
| Parking Spaces | 1 Parking Space |
| Pool Type | Pool with Hot Tub/Spa |
| Pool Area | 1,356 sqft |
| Porch | Porch |
| Heating System | HVAC |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 813 DUFF CT |
|---|---|
| City | SUNNYVALE |
| State | CA |
| Zip | 94086-8584 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1B2 |
| Legal Description | LOT B |
| Legal Subdivision | GAVELLO GLEN UN 02 |
| Legal Lot Number | B |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 508510 |
813 Duff Ct is owner-occupied and held in a trust since December 2025.
Source: Santa Clara County records, as of July 27, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 813 DUFF CT, SUNNYVALE, CA 94086-8584 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 9, 1996 · Amount on File |
| Deed Sale | Apr 9, 1996 · Amount on File |
| Deed Document Number | 199613249499 |
| Deed Book / Page | 276 / 1921 |
| Last Transfer Date | Dec 1, 2025 |
| Transfer Doc | 0025915992 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SANTA CLARA CA |
| Recording Date | Dec 9, 2025 |
| Property Address | 813 DUFF CT, SUNNYVALE, CA 94086-8584 |
| Document Number | 0025915992 |
| Map Reference | MB 467 PG 7 |
| Instrument Date | Dec 1, 2025 |
| Instrument | 25915992 |
| Transaction Type | Transfer |
| Record Updated | Dec 17, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 813 DUFF CT, SUNNYVALE, CA 94086-8584 |
The 2025 property tax bill for 813 Duff Ct was $5,954.
Source: Santa Clara County assessment roll, as of July 27, 2026
| Type | Name |
|---|---|
| State | California |
| County | Santa Clara County |
| Municipality | Sunnyvale City |
| Unified School District | Santa Clara Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $523,029 (+2%) Land $260,393 Building $262,636 | |
| 2025 | $5,954.00 Homeowner's exemption | $512,775 Land $255,288 Building $257,487 |
| 2023 | $5,810.00 (+1.68%) Homeowner's exemption | $492,866 Land $245,376 Building $247,490 |
| 2022 | $5,714.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 813 Duff Ct in Zone X, an area of moderate flood risk.
Source: FEMA National Flood Hazard Layer, effective January 18, 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 |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 813 Duff Ct has no burnable land within ember reach, so its wildfire risk is not rated.
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 660 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 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: GeoLinks, Sail Internet.
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