Los Angeles County property record for 20859 Starshine Rd, Diamond Bar, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,243 sqft · built 1983 |
| Lot Size | 0.201 acres (8,732 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $5,352 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8765-004-025 |
| Primary APN | 8765-004-025 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 2,243 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1983 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Tile |
| Lot Area | 8,732 sqft (0.201 acres) |
| Lot Dimensions | 119 ft deep x 70 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 20859 STARSHINE RD |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-4018 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCRPD10000 |
| Legal Description | *TR=35742 LOT 25 |
| Legal Subdivision | 35742 |
| Legal Tract | 35742 |
| Legal Block | 3 |
| Legal Lot Number | 25 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 408707 |
Source: Los Angeles County records, as of August 25, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 20859 STARSHINE RD, WALNUT, CA 91789-4018 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Jul 31, 2025 |
| Transfer Doc | 0000570902 |
| Record Updated | Oct 29, 2026 |
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Diamond Bar City |
| Unified School District | Walnut Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $394,949 (+2%) Land $69,084 Building $325,865 | |
| 2025 | $5,352.00 (+9.31%) Homeowner's exemption | $387,206 (+4.04%) Land $67,730 Building $319,476 |
| 2023 | $4,896.00 (+2.17%) Homeowner's exemption | $372,171 Land $65,100 Building $307,071 |
| 2022 | $4,792.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| 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 | Low lower than 63% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Direct burnable vegetation |
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 | WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2023 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 254 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, Frontier, GeoLinks, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures