Los Angeles County property record for 21020 Ambushers St, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,722 sqft · built 1981 |
| Lot Size | 0.534 acres (23,259 sqft) |
| Owner | Individual Name on File |
| Last Sale | $731,000 (May 2010) |
| Tax Bill | $12,065 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8714-011-012 |
| Primary APN | 8714-011-012 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 2,722 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1981 |
|---|---|
| Effective Year Built | Effective 1981 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Tile |
| Lot Area | 23,259 sqft (0.534 acres) |
| Lot Dimensions | 215 ft deep x 111 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 21020 AMBUSHERS ST |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-3731 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR19000* |
| Legal Description | *TR=34160 LOT 20 |
| Legal Subdivision | 34160 |
| Legal Tract | 34160 |
| Legal Block | 2 |
| Legal Lot Number | 20 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 2 |
| Census Block | 2013 |
| Census Tract | 403325 |
21020 Ambushers St is owned and occupied by an individual who bought it in May 2010.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21020 AMBUSHERS ST, DIAMOND BAR, CA 91765-3731 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | Name on Deed |
|---|---|
| Last Sale | May 6, 2010 · Amount on File |
| Deed Sale | May 6, 2010 · Amount on File |
| Deed Document Number | 2010621010 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 21020 Ambushers St was $12,065.
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 | $962,448 (+2%) Land $509,007 Building $453,441 | |
| 2025 | $12,065.00 | $943,577 Land $499,027 Building $444,550 |
| 2023 | $11,202.00 (+2.1%) | $906,939 Land $479,650 Building $427,289 |
| 2022 | $10,972.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 21020 Ambushers St in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 21020 Ambushers St is moderate, ranking above 48% of the US, with a 0.08% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 48% of the US · lower than 71% of California |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Indirect 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 | 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 565 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Frontier, Verizon.
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