Los Angeles County property record for 20556 Crestline Dr, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 3,453 sqft · built 1996 |
| Lot Size | 0.23 acres (10,029 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $430,000 (Jul 1996) |
| Tax Bill | $9,781 (2025) |
| Deeds & Mortgages | Jul 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8269-090-014 |
| Primary APN | 8269-090-014 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Building Area | 3,453 sqft Living Area |
| Year Built | Built 1996 |
|---|---|
| Effective Year Built | Effective 1996 |
| Construction Type | Wood |
| Lot Area | 10,029 sqft (0.23 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 20556 CRESTLINE DR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-4711 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR18000-R |
| Legal Description | TR=44478 LOT 36 |
| Legal Subdivision | 44478 |
| Legal Tract | 44478 |
| Legal Block | 3 |
| Legal Lot Number | 36 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 408703 |
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 | 20556 CRESTLINE DR, DIAMOND BAR, CA 91765-4711 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 2, 1996 · Amount on Record |
| Deed Sale | Jul 2, 1996 · Amount on Record |
| Deed Document Number | 19961049431 |
| Prior Transfer Date | Feb 23, 1996 |
| Prior Transfer Doc | 0001252691 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Jul 10, 2019 |
| Property Address | 20556 CRESTLINE DR, DIAMOND BAR, CA 91765-4711 |
| Document Number | 0000666361 |
| Instrument Date | Jun 28, 2019 |
| Instrument | 666361 |
| Transaction Type | Transfer |
| Record Updated | Jul 17, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 20556 CRESTLINE DR DIAMOND BAR CA 917654711, DIAMOND BAR, CA 91765-4711 |
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 | $748,611 (+2%) Land $214,289 Building $534,322 | |
| 2025 | $9,781.00 (+9.71%) Homeowner's exemption | $733,934 (+4.04%) Land $210,088 Building $523,846 |
| 2023 | $8,915.00 (+2.7%) Homeowner's exemption | $705,436 Land $201,931 Building $503,505 |
| 2022 | $8,681.00 |
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
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 | Moderate above 62% of the US · lower than 62% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 257 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 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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