Riverside County property record for 6639 Mount Diablo Ave, Riverside, CA 92506
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,186 sqft · built 1952 |
| Lot Size | 0.2 acres (8,712 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $658,000 (Jan 2005) |
| Tax Bill | $5,556 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 225-322-016 |
| Primary APN | 225-322-016 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,186 sqft Living Area |
| Gross Area | 1,462 sqft |
| 1st Floor Area | 1,186 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Construction Type | Wood |
| Roof Material | Gravel |
| Lot Area | 8,712 sqft (0.2 acres) |
| Garage Type | Detached |
| Garage Area | 360 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Old Parcel Number | 042400231 |
|---|---|
| Street Address | 6639 MOUNT DIABLO AVE |
| City | RIVERSIDE |
| State | CA |
| Zip | 92506-3914 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1065 |
| Legal Description | LOT 223 MB 025/004 SUN GOLD TERRACE UNIT 4 |
| Legal Subdivision | SUN GOLD TERRACE UNIT 4 |
| Legal Lot Number | 223 |
| Jurisdiction | RIVERSIDE CA |
| Township / Civil Division | RIVERSIDE |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 31100 |
Source: Riverside County records, as of July 29, 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 | 6639 MOUNT DIABLO AVE, RIVERSIDE, CA 92506-3914 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Woman |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 7, 2005 · Amount on Record |
| Deed Sale | Jan 7, 2005 · Amount on Record |
| Prior Sale | Sep 24, 2004 · Amount on Record |
| Deed Document Number | 200520175 |
| Prior Transfer Date | Sep 18, 2004 |
| Prior Transfer Doc | 0000754023 |
| Record Updated | Oct 29, 2026 |
Source: Riverside County assessment roll, as of July 29, 2026
| Type | Name |
|---|---|
| State | California |
| County | Riverside County |
| Municipality | Riverside City |
| Unified School District | Riverside Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $511,815 (+2%) Land $143,802 Building $368,013 | ||
| 2025 | $5,556.00 (+13.71%) Homeowner's exemption | $501,781 (+13.84%) Land $140,983 Building $360,798 | |
| 2023 | $4,886.00 (+1.9%) Homeowner's exemption | $440,763 Land $113,868 Building $326,895 | |
| 2022 | $4,795.00 | ||
| 2021 | $448,830 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective October 14, 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 | CITY OF RIVERSIDE serves 302,776 people · EPA ID CA3310031 |
|---|---|
| Water Source | Groundwater influenced by surface water |
| Lead | 1 ppb (2023–2025) 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 440 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: GeoLinks, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures