Los Angeles County property record for 20421 Seton Hill Dr, Walnut, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,401 sqft · built 1963 |
| Lot Size | 0.278 acres (12,100 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $850,000 (Dec 2016) |
| Tax Bill | $12,572 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage |
| Flood Zone | Zone D (undetermined) |
| APN | 8712-004-009 |
| Primary APN | 8712-004-009 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,401 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1963 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Wood Shingle |
| Lot Area | 12,100 sqft (0.278 acres) |
| Lot Dimensions | 80 ft deep x 143 ft wide |
| Garage Type | Attached |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 20421 SETON HILL DR |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-1018 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | WAR110000* |
| Legal Description | TRACT NO 27483 LOT 9 |
| Legal Subdivision | 27483 |
| Legal Tract | 27483 |
| Legal Block | 1 |
| Legal Lot Number | 9 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 403409 |
20421 Seton Hill Dr is owner-occupied and held in a trust since December 2016.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 20421 SETON HILL DR, WALNUT, CA 91789-1018 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Personal Trust |
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 Sale | Dec 14, 2016 · Amount on File |
| Deed Sale | Dec 14, 2016 · Amount on File |
| Prior Sale | Dec 2, 2014 · Amount on File |
| Deed Document Number | 20161588194 |
| Prior Transfer Date | Nov 3, 2014 |
| Prior Transfer Doc | 0001294451 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Property Address | 20421 SETON HILL DR, WALNUT, CA 91789-1018 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | TICOR TTL ORANGE CNTY BRANCH |
| Name | Verified Name |
|---|
| Document Number | 0000965704 |
|---|---|
| Date | Aug 19, 2020 |
| Instrument | 20-0965704 |
| Name | DRAPER & KRAMER MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | DOWNERS GROVE, IL 60515 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2050 |
The 2025 property tax bill for 20421 Seton Hill Dr was $12,572 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 | Walnut City |
| Unified School District | Walnut Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,006,219 (+2%) Land $804,978 Building $201,241 | |
| 2025 | $12,572.00 Homeowner's exemption | $986,491 Land $789,195 Building $197,296 |
| 2023 | $11,564.00 (+2.55%) Homeowner's exemption | $948,186 Land $758,550 Building $189,636 |
| 2022 | $11,277.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20421 Seton Hill Dr in Zone D, where flood risk has not been studied.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026
| FEMA Flood Zone | Zone D undetermined · not studied |
|---|---|
| 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 20421 Seton Hill Dr is moderate, ranking above 53% of the US, with a 0.07% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 53% of the US · lower than 68% of California |
|---|---|
| Wildfire Likelihood | 0.07% annual chance |
| Exposure | Direct burnable vegetation |
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 96 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 |
May also be available: Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures