Los Angeles County property record for 1733 Roundtree Cir, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,628 sqft · built 1977 |
| Lot Size | 0.208 acres (9,042 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $1,109,000 (Jul 2024) |
| Tax Bill | $13,798 (2025) |
| Deeds & Mortgages | Feb 2026 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 8292-020-049 |
| Primary APN | 8292-020-049 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,628 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Wood Shingle |
| Lot Area | 9,042 sqft (0.208 acres) |
| Lot Dimensions | 114 ft deep x 82 ft wide |
| Garage Type | Attached |
| Heating System | Central |
|---|---|
| Water Source | Commercial |
| Street Address | 1733 ROUNDTREE CIR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-2752 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR1* |
| Legal Description | *TR=28579 LOT 100 |
| Legal Subdivision | 28579 |
| Legal Tract | 28579 |
| Legal Block | 2 |
| Legal Lot Number | 100 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 403328 |
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 | 1733 ROUNDTREE CIR, DIAMOND BAR, CA 91765-2752 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Man |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 25, 2024 · Amount on Record |
| Deed Sale | Jul 25, 2024 · Amount on Record |
| Prior Sale | Jun 8, 2001 · Amount on Record |
| Deed Document Number | 2024493186 |
| Prior Transfer Date | Sep 17, 2005 |
| Prior Transfer Doc | 0002652323 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Property Address | 1733 ROUNDTREE CIR, DIAMOND BAR, CA 91765-2752 |
| Transaction Type | Mortgage |
| Record Updated | Feb 11, 2026 |
| Name | Verified Name |
|---|---|
| Address | 1733 ROUNDTREE CIR, DIAMOND BAR, CA 91765-2752 |
| Document Number | 0000073600 |
|---|---|
| Date | Feb 2, 2026 |
| Instrument | 26-0073600 |
| Name | OUTSTANDING INVESTMENT CO INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN LEANDRO, CA 94577 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Feb 1, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.37% |
| Type Change Date | Feb 1, 2033 |
| Change Frequency | 6 Months |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 11.3% |
| Index | SOFR Average 30-Day |
| Max Rate | 11.3% |
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 | $1,131,180 (+2%) Land $905,760 Building $225,420 | |
| 2025 | $13,798.00 (+165.91%) | $1,109,000 (+176.79%) Land $888,000 Building $221,000 |
| 2023 | $5,189.00 (+2.17%) Homeowner's exemption | $400,659 Land $242,003 Building $158,656 |
| 2022 | $5,079.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 | Not rated no burnable land within 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 441 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 35 |
May also be available: Frontier, T-Mobile, Verizon.
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