Los Angeles County property record for 1435 Copper Mountain Dr, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,380 sqft · built 1978 |
| Lot Size | 0.164 acres (7,148 sqft) |
| Owner | Individual Name on File |
| Last Sale | $720,000 (Sep 2005) |
| Tax Bill | $12,348 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8702-014-044 |
| Primary APN | 8702-014-044 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 2,380 sqft Living Area |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1978 |
| Construction Type | Wood |
| Lot Area | 7,148 sqft (0.164 acres) |
| Heating System | Central |
|---|
| Street Address | 1435 COPPER MOUNTAIN DR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-2612 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR18000* |
| Legal Description | *TR=25096 LOT 204 |
| Legal Subdivision | 25096 |
| Legal Tract | 25096 |
| Legal Block | 3 |
| Legal Lot Number | 204 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 403324 |
1435 Copper Mountain Dr is owned and occupied by an individual who bought it in September 2005.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1435 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2612 |
| 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 | Sep 2, 2005 · Amount on File |
| Deed Sale | Sep 2, 2005 · Amount on File |
| Prior Sale | Jul 23, 2003 · Amount on File |
| Deed Document Number | 20052127996 |
| Prior Transfer Date | Aug 4, 2005 |
| Prior Transfer Doc | 0002127995 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1435 Copper Mountain Dr was $12,348 with a homeowner's exemption.
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 | $1,003,601 (+2%) Land $609,132 Building $394,469 | |
| 2025 | $12,348.00 Homeowner's exemption | $983,924 Land $597,189 Building $386,735 |
| 2023 | $11,468.00 (+2.13%) Homeowner's exemption | $945,718 Land $574,000 Building $371,718 |
| 2022 | $11,229.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 1435 Copper Mountain Dr in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 1435 Copper Mountain Dr 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 | 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 501 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, T-Mobile, Verizon.
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