Los Angeles County property record for 20433 Flintgate Dr, Diamond Bar, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,330 sqft · built 1966 |
| Lot Size | 0.145 acres (6,318 sqft) |
| Owner | Individual Name on File |
| Last Sale | $365,000 (Aug 2012) |
| Tax Bill | $5,976 (2025) |
| Deeds & Mortgages | Apr 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 8762-034-014 |
| Primary APN | 8762-034-014 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,330 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1966 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 6,318 sqft (0.145 acres) |
| Cooling System | Wall Unit |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 20433 FLINTGATE DR |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-3733 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCRA06 |
| Legal Description | TRACT NO 25391 LOT 31 |
| Legal Subdivision | 25391 |
| Legal Tract | 25391 |
| Legal Block | 1 |
| Legal Lot Number | 31 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1020 |
| Census Tract | 403326 |
20433 Flintgate Dr is owned and occupied by an individual who bought it in August 2012.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 20433 FLINTGATE DR, WALNUT, CA 91789-3733 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
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 | Aug 31, 2012 · Amount on File |
| Deed Sale | Aug 31, 2012 · Amount on File |
| Prior Sale | Jul 29, 2003 · Amount on File |
| Deed Document Number | 20121313947 |
| Prior Transfer Date | Aug 3, 2012 |
| Prior Transfer Doc | 0001313948 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Property Address | 20433 FLINTGATE DR, DIAMOND BAR, CA 91789-3733 |
| Transaction Type | Mortgage |
| Record Updated | Apr 8, 2021 |
| Title Company | AMERICAN SW TITLE, AMERICAN COAST TITLE |
| Name | Verified Name |
|---|---|
| Address | 20433 FLINTGATE DR, WALNUT, CA 91789-3733 |
| Document Number | 0000508833 |
|---|---|
| Date | Apr 1, 2021 |
| Instrument | 21-0508833 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Mortgage Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Apr 1, 2036 |
The 2025 property tax bill for 20433 Flintgate Dr was $5,976 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 | $458,446 (+2%) Land $270,797 Building $187,649 | |
| 2025 | $5,976.00 Homeowner's exemption | $449,458 Land $265,488 Building $183,970 |
| 2023 | $5,532.00 (+2.16%) Homeowner's exemption | $432,007 Land $255,180 Building $176,827 |
| 2022 | $5,415.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20433 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 20433 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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