Los Angeles County property record for 21010 Riego Dr, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,892 sqft · built 1980 |
| Lot Size | 0.186 acres (8,087 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $760,000 (Jan 2018) |
| Tax Bill | $10,788 (2025) |
| Deeds & Mortgages | Sep 2020 Transfer Sep 2020 Mortgage + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 8765-013-020 |
| Primary APN | 8765-013-020 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,892 sqft Living Area |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Construction Type | Wood |
| Lot Area | 8,087 sqft (0.186 acres) |
| Pool Type | Spa / Hot Tub (No Pool) |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 21010 RIEGO DR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-3464 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCCPD-RPD1 |
| Legal Description | *TR=33104 LOT 36 |
| Legal Subdivision | 33104 |
| Legal Tract | 33104 |
| Legal Block | 1 |
| Legal Lot Number | 36 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1010 |
| 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 Individual Names on Record |
|---|---|
| Mailing Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Sep 22, 2020 | Quit Claim Deed, Transfer WFG NATIONAL TITLE COMPANY, WFG NAT'L TITLE CO |
| Sep 22, 2020 | Intrafamily Transfer, Transfer · Conventional Mortgage TJ FINANCIAL INC |
| Aug 17, 2020 | Quit Claim Deed, Transfer OTHER |
| Dec 28, 2018 | Quit Claim Deed, Transfer Quitclaim |
| Jan 30, 2018 | Grant Deed, Transfer · Conventional Mortgage TJ FINANCIAL INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 30, 2018 · Amount on Record |
| Deed Sale | Jan 30, 2018 · Amount on Record |
| Deed Document Number | 201896948 |
| Last Transfer Date | Sep 4, 2020 |
| Transfer Doc | 0001152766 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Sep 22, 2020 |
| Property Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0001152766 |
| Instrument Date | Sep 4, 2020 |
| Instrument | 1152766 |
| Transaction Type | Transfer |
| Record Updated | Sep 29, 2020 |
| Title Company | WFG NATIONAL TITLE COMPANY, WFG NAT'L TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 20025 PARTHENIA ST NORTHRIDGE CA 913243223, NORTHRIDGE, CA 91324-3223 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Sep 22, 2020 |
| Property Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0001152764 |
| Map Reference | MB 920 PG 1-6 |
| Instrument Date | Sep 3, 2020 |
| Instrument | 20-1152764 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Title Company | WFG NATIONAL TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 20025 PARTHENIA ST, NORTHRIDGE, CA 91324-3223 |
| Document Number | 0001152765 |
|---|---|
| Date | Sep 22, 2020 |
| Instrument | 20-1152765 |
| Name | TJ FINANCIAL INC |
|---|---|
| Type | Funding / Finance Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2050 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Aug 17, 2020 |
| Property Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0000952361 |
| Instrument Date | Mar 6, 2019 |
| Instrument | 952361 |
| Transaction Type | Transfer |
| Record Updated | Aug 25, 2020 |
| Title Company | OTHER |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 20026 PARTHENIA ST NORTHRIDGE CA 91324, NORTHRIDGE, CA 91324 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Dec 28, 2018 |
| Property Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0001317000 |
| Instrument Date | Dec 28, 2018 |
| Instrument | 1317000 |
| Transaction Type | Transfer |
| Record Updated | Jan 14, 2019 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 20025 PARTHENIA ST NORTHRIDGE CA 913243223, NORTHRIDGE, CA 91324-3223 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Jan 30, 2018 |
| Property Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0000096948 |
| Map Reference | MB 920 PG 1-6 |
| Instrument Date | Dec 19, 2017 |
| Instrument | 18-0096948 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Title Company | LAWYERS TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 21010 RIEGO DR, DIAMOND BAR, CA 91765-3464 |
| Document Number | 0000096949 |
|---|---|
| Date | Jan 30, 2018 |
| Instrument | 18-0096949 |
| Name | TJ FINANCIAL INC |
|---|---|
| Type | Funding / Finance Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2048 |
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 | $851,694 (+2%) Land $486,108 Building $365,586 | |
| 2025 | $10,788.00 (+9.14%) | $834,995 (+4.04%) Land $476,577 Building $358,418 |
| 2023 | $9,885.00 (+2.12%) | $802,573 Land $458,072 Building $344,501 |
| 2022 | $9,680.00 |
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 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.06% 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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