Los Angeles County property record for 20830 E Crest Ln, Diamond Bar, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 1,546 sqft · built 1987 |
| Lot Size | 0.122 acres (5,305 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $7,624 (2025) |
| Deeds & Mortgages | Nov 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8765-019-003 |
| Primary APN | 8765-019-003 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,546 sqft Living Area |
| Year Built | Built 1987 |
|---|---|
| Effective Year Built | Effective 1987 |
| Construction Type | Wood |
| Lot Area | 5,305 sqft (0.122 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 20830 E CREST LN |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-4063 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCRPD10000 |
| Legal Description | TR=43760 LOT 41 |
| Legal Subdivision | 43760 |
| Legal Tract | 43760 |
| Legal Block | 1 |
| Legal Lot Number | 41 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 403305 |
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 | 2 Company Names on Record |
|---|---|
| Mailing Address | 20830 E CREST LN, WALNUT, CA 91789-4063 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Nov 8, 2019 |
| Transfer Doc | 0001271025 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Nov 20, 2019 |
| Property Address | 20830 E CREST LN, DIAMOND BAR, CA 91789-4063 |
| Document Number | 0001271025 |
| Instrument Date | Nov 8, 2019 |
| Instrument | 1271025 |
| Transaction Type | Transfer |
| Record Updated | Dec 13, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 20830 E CREST LN WALNUT CA 917894063, WALNUT, CA 91789-4063 |
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 | $530,456 (+2%) Land $200,966 Building $329,490 | |
| 2025 | $7,624.00 (+9.01%) | $520,056 (+4.04%) Land $197,026 Building $323,030 |
| 2023 | $6,994.00 (+2.93%) | $499,864 Land $189,376 Building $310,488 |
| 2022 | $6,795.00 |
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 67% of the US · lower than 81% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | None beyond 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 327 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
May also be available: Frontier, GeoLinks, T-Mobile, Verizon.
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