Los Angeles County property record for 20120 Diehl St, Walnut, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,232 sqft · built 1964 |
| Lot Size | 0.172 acres (7,471 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $3,583 (2025) |
| Deeds & Mortgages | Oct 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 8720-002-011 |
| Primary APN | 8720-002-011 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,232 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 7,471 sqft (0.172 acres) |
| Lot Dimensions | 108 ft deep x 67 ft wide |
| Heating System | Central |
|---|---|
| Water Source | Commercial |
| Street Address | 20120 DIEHL ST |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-2307 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | WAR17200* |
| Legal Description | TRACT NO 27883 LOT 11 |
| Legal Subdivision | 27883 |
| Legal Tract | 27883 |
| Legal Block | 1 |
| Legal Lot Number | 11 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 403402 |
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 | 11380 FULBOURN CT, RANCHO CUCAMONGA, CA 91730-8311 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Oct 9, 2018 |
| Transfer Doc | 0001035692 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Oct 11, 2018 |
| Property Address | 20120 DIEHL ST, WALNUT, CA 91789-2307 |
| Document Number | 0001035692 |
| Map Reference | MB 710 PG 76-80 |
| Instrument Date | Oct 9, 2018 |
| Instrument | 18-1035692 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Title Company | STEWART TITLE OF CALIFORNIA |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 11380 FULBOURN CT, 11380, RANCHO CUCAMONGA, CA 91730-8311 |
| Name | Verified Name |
|---|---|
| Address | 11380 FULBOURN CT, RANCHO CUCAMONGA, CA 91730-8311 |
| Document Number | 0001035693 |
|---|---|
| Date | Oct 11, 2018 |
| Instrument | 18-1035693 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2048 |
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 | $245,962 (+2%) Land $98,377 Building $147,585 | |
| 2025 | $3,583.00 (+8.94%) | $241,141 (+4.04%) Land $96,449 Building $144,692 |
| 2023 | $3,289.00 (+2.08%) | $231,778 Land $92,704 Building $139,074 |
| 2022 | $3,222.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 2 (1980) |
| Most Recent Claim | Jan 1980 · tidal / storm surge |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no wildfire likelihood modeled here |
|---|
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 621 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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