Los Angeles County property record for 23310 Stirrup Dr, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,554 sqft · built 1975 |
| Lot Size | 0.158 acres (6,872 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $386,000 (May 2011) |
| Tax Bill | $6,986 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8717-017-035 |
| Primary APN | 8717-017-035 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 1,554 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Wood Shingle |
| Lot Area | 6,872 sqft (0.158 acres) |
| Lot Dimensions | 110 ft deep x 63 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 23310 STIRRUP DR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-2041 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR18000* |
| Legal Description | TRACT NO 31140 LOT 102 |
| Legal Subdivision | 31140 |
| Legal Tract | 31140 |
| Legal Block | 1 |
| Legal Lot Number | 102 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 403319 |
23310 Stirrup Dr is held in a trust since May 2011.
Source: Los Angeles County records, as of August 25, 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 | 2 Trust Names on File |
|---|---|
| Mailing Address | 4993 BELLA COLLINA ST, OCEANSIDE, CA 92056-1916 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 13, 2011 · Amount on File |
| Deed Sale | May 13, 2011 · Amount on File |
| Prior Sale | Aug 6, 2004 · Amount on File |
| Deed Document Number | 2011678780 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 23310 Stirrup Dr was $6,986.
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 | Pomona Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $504,412 (+2%) Land $352,961 Building $151,451 | |
| 2025 | $6,986.00 | $494,523 Land $346,041 Building $148,482 |
| 2023 | $6,285.00 (+1.58%) | $475,321 Land $332,604 Building $142,717 |
| 2022 | $6,187.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 23310 Stirrup 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 23310 Stirrup 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 215 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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