Los Angeles County property record for 24224 Gem Pl, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,499 sqft · built 1988 |
| Lot Size | 0.173 acres (7,554 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $860,000 (May 2023) |
| Tax Bill | $11,956 (2025) |
| Deeds & Mortgages | May 2023 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 8281-040-053 |
| Primary APN | 8281-040-053 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,499 sqft Living Area |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Construction Type | Wood |
| Lot Area | 7,554 sqft (0.173 acres) |
| Lot Dimensions | 90 ft deep x 83 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 24224 GEM PL |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-1854 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR115000- |
| Legal Description | TR=42580 LOT 46 |
| Legal Subdivision | 42580 |
| Legal Tract | 42580 |
| Legal Block | 1 |
| Legal Lot Number | 46 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 403321 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | PO BOX 90691, CITY OF INDUSTRY, CA 91715-0691 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 10, 2023 · Amount on Record |
| Deed Sale | May 10, 2023 · Amount on Record |
| Prior Sale | Jan 29, 2014 · Amount on Record |
| Deed Document Number | 2023304077 |
| Prior Transfer Date | Dec 14, 2002 |
| Prior Transfer Doc | 0003187408 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | May 10, 2023 |
| Property Address | 24224 GEM PL, DIAMOND BAR, CA 91765-1854 |
| Document Number | 0000304077 |
| Map Reference | MB 1033 PG 45-53 |
| Instrument Date | Apr 10, 2023 |
| Instrument | 23-0304077 |
| Transaction Type | Transfer |
| Record Updated | May 18, 2023 |
| Title Company | NOT AVAILABLE, PROVIDENT TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 90691, CITY INDUSTRY, CA 91715-0691 |
| Document Number | 0000304078 |
|---|---|
| Date | May 10, 2023 |
| Instrument | 23-0304078 |
| Name | CTBC BANK CORP USA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 1, 2053 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6% |
| Type Change Date | Jun 1, 2026 |
| Change Frequency | 6 Months |
| Min Rate At Change | 6% |
| Max Rate At Change | 11% |
| Index | Other |
| Margin | 3 |
| Max Rate | 12% |
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 | $912,636 (+2%) Land $730,110 Building $182,526 | |
| 2025 | $11,956.00 (+39.69%) | $894,743 (+32.07%) Land $715,795 Building $178,948 |
| 2023 | $8,559.00 (+1.58%) Homeowner's exemption | $677,491 Land $473,067 Building $204,424 |
| 2022 | $8,426.00 |
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 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.03% 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 322 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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