Santa Clara County property record for 1017 Heatherstone Ave, Sunnyvale, CA 94087
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,905 sqft · built 1954 |
| Lot Size | 0.154 acres (6,696 sqft) |
| Owner | Individual Name on File |
| Last Sale | $375,000 (May 1999) |
| Tax Bill | $9,784 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 198-29-019 |
| Primary APN | 198-29-019 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,905 sqft Living Area |
| Gross Area | 1,240 sqft |
| 1st Floor Area | 1,240 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | H-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 6,696 sqft (0.154 acres) |
| Lot Dimensions | 108 ft deep x 62 ft wide |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1017 HEATHERSTONE AVE |
|---|---|
| City | SUNNYVALE |
| State | CA |
| Zip | 94087-1617 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R0 |
| Legal Description | WESTMOOR VILLAGE 1 UN 1 MAP C2 832 |
| Legal Lot Number | 17 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 508401 |
1017 Heatherstone Ave is owned and occupied by an individual who bought it in May 1999.
Source: Santa Clara County records, as of July 27, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1017 HEATHERSTONE AVE, SUNNYVALE, CA 94087-1617 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 27, 1999 · Amount on File |
| Deed Sale | May 27, 1999 · Amount on File |
| Prior Sale | Jul 16, 1997 · Amount on File |
| Deed Document Number | 199914832211 |
| Prior Transfer Date | May 18, 1999 |
| Prior Transfer Doc | 0014832211 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1017 Heatherstone Ave was $9,784 with a homeowner's exemption.
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 | $832,619 (+2%) Land $561,208 Building $271,411 | |
| 2025 | $9,784.00 Homeowner's exemption | $816,294 Land $550,204 Building $266,090 |
| 2023 | $9,347.00 (+1.68%) Homeowner's exemption | $784,598 Land $528,840 Building $255,758 |
| 2022 | $9,193.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 1017 Heatherstone Ave 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 1017 Heatherstone Ave 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 841 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · 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 |
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