Los Angeles County property record for 933 Summitridge Dr, Diamond Bar, CA 91765
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,933 sqft · built 1988 |
| Lot Size | 0.183 acres (7,960 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $8,464 (2025) |
| Deeds & Mortgages | Mar 2020 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 8701-043-004 |
| Primary APN | 8701-043-004 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,933 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Conventional |
| Construction Type | Wood |
| Lot Area | 7,960 sqft (0.183 acres) |
| Lot Dimensions | 106 ft deep x 84 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 933 SUMMITRIDGE DR |
|---|---|
| City | DIAMOND BAR |
| State | CA |
| Zip | 91765-4384 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCRPD20000 |
| Legal Description | TR=42574 LOT 1 |
| Legal Subdivision | 42574 |
| Legal Tract | 42574 |
| Legal Block | 2 |
| Legal Lot Number | 1 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 403320 |
Source: Los Angeles County assessment roll, as of May 21, 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 File |
|---|---|
| Mailing Address | 933 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4384 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Sep 9, 2015 |
| Transfer Doc | 0001122641 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Property Address | 933 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4384 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | CHICAGO TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000294158 |
|---|---|
| Date | Mar 12, 2020 |
| Instrument | 20-0294158 |
| Name | CATHAY BANK |
|---|---|
| Type | Bank |
| Address | EL MONTE, CA 91731 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
Source: Los Angeles County assessment roll, as of May 21, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Diamond Bar City |
| Unified School District | Pomona Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $8,464.00 (+11.68%) Homeowner's exemption | $559,945 (+4.04%) Land $222,585 Building $337,360 |
| 2023 | $7,579.00 (+1.81%) Homeowner's exemption | $538,204 Land $213,943 Building $324,261 |
| 2022 | $7,444.00 |
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 | Moderate above 47% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect 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 414 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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