Los Angeles County property record for 23100 Rio Lobos Rd, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,747 sqft · built 1986 |
| Lot Size | 0.292 acres (12,738 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $5,290 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8717-029-031 |
| Primary APN | 8717-029-031 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,747 sqft Living Area |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Construction Type | Wood |
| Lot Area | 12,738 sqft (0.292 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 23100 RIO LOBOS RD |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-4134 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR3800025 |
| Legal Description | *TR=37034 LOT 20 |
| Legal Subdivision | 37034 |
| Legal Tract | 37034 |
| Legal Block | 2 |
| Legal Lot Number | 20 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 403319 |
23100 Rio Lobos Rd, a single family home, is owned by an individual.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 13528 ASPEN GROVE RD, EASTVALE, CA 92880-8893 |
| 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 |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 23100 Rio Lobos Rd was $5,290.
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 | $385,589 (+1.99%) Land $257,556 Building $128,033 | |
| 2025 | $5,290.00 | $378,048 Land $252,506 Building $125,542 |
| 2023 | $4,898.00 (+2.11%) | $363,369 Land $242,701 Building $120,668 |
| 2022 | $4,797.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 23100 Rio Lobos Rd 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 23100 Rio Lobos Rd is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 464 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 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Frontier, GeoLinks.
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