Los Angeles County property record for 20400 Flintgate Dr, Diamond Bar, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,784 sqft · built 1969 |
| Lot Size | 0.232 acres (10,112 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $2,105 (2025) |
| Deeds & Mortgages | May 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8762-032-042 |
| Primary APN | 8762-032-042 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,784 sqft Living Area |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1970 |
| Construction Type | Wood |
| Lot Area | 10,112 sqft (0.232 acres) |
| Heating System | Central |
|---|
| Street Address | 20400 FLINTGATE DR |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-3732 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR18500* |
| Legal Description | TRACT NO 28258 LOT 72 |
| Legal Subdivision | 28258 |
| Legal Tract | 28258 |
| Legal Block | 1 |
| Legal Lot Number | 72 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 403326 |
20400 Flintgate Dr is owned by a company that acquired it in May 2019 and is owner-occupied.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 20400 FLINTGATE DR, WALNUT, CA 91789-3732 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Borrower in Default |
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 | 2 Names on Deed |
|---|---|
| Last Transfer Date | May 3, 2019 |
| Transfer Doc | 0000449754 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | May 16, 2019 |
| Property Address | 20400 FLINTGATE DR, DIAMOND BAR, CA 91789-3732 |
| Document Number | 0000449754 |
| Instrument Date | May 3, 2019 |
| Instrument | 449754 |
| Transaction Type | Transfer |
| Record Updated | Jun 4, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 20400 FLINTGATE DR WALNUT CA 917893732, WALNUT, CA 91789-3732 |
The 2025 property tax bill for 20400 Flintgate Dr was $2,105 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 | $122,504 (+2%) Land $25,700 Building $96,804 | |
| 2025 | $2,105.00 Homeowner's exemption | $120,103 Land $25,197 Building $94,906 |
| 2023 | $1,999.00 (+2.2%) Homeowner's exemption | $115,441 Land $24,219 Building $91,222 |
| 2022 | $1,956.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20400 Flintgate Dr 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.
The area around 20400 Flintgate 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 104 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| Starlink Satellite | 280 / 30 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Frontier, GeoLinks, Verizon.
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