Riverside County property record for 6620 Mount Diablo Ave, Riverside, CA 92506
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,186 sqft · built 1952 |
| Lot Size | 0.21 acres (9,148 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $512,000 (Mar 2026) |
| Tax Bill | $1,819 (2025) |
| Deeds & Mortgages | Mar 2026 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 225-323-031 |
| Primary APN | 225-323-031 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| 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 |
| Exterior Material | Block |
| Construction Type | Wood |
| Roof Material | Gravel |
| Lot Area | 9,148 sqft (0.21 acres) |
| Garage Type | Detached |
| Garage Area | 360 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Street Address | 6620 MOUNT DIABLO AVE |
|---|---|
| City | RIVERSIDE |
| State | CA |
| Zip | 92506-3925 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1065 |
| Legal Description | .21 ACRES M/L IN LOT 236 MB 025/004 SUN GOLD TERRACE UNIT 4 |
| Legal Subdivision | SUN GOLD TERRACE UNIT 4 |
| Legal Lot Number | 236 |
| Jurisdiction | RIVERSIDE CA |
| Township / Civil Division | RIVERSIDE |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 31100 |
6620 Mount Diablo Ave is owned and occupied by two individuals who bought it in March 2026.
Source: Riverside County records, as of July 29, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 6620 MOUNT DIABLO AVE, RIVERSIDE, CA 92506-3925 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 20, 2026 · Amount on File |
| Deed Sale | Mar 20, 2026 · Amount on File |
| Deed Document Number | 202684691 |
| Prior Transfer Date | Jul 14, 2025 |
| Prior Transfer Doc | 0000221367 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | RIVERSIDE CA |
| Recording Date | Mar 20, 2026 |
| Property Address | 6620 MOUNT DIABLO AVE, RIVERSIDE, CA 92506-3925 |
| Document Number | 0000084691 |
| Map Reference | MB 25 PG 4 |
| Instrument Date | Mar 3, 2026 |
| Instrument | 2026-0084691 |
| Transaction Type | Transfer |
| Record Updated | Apr 1, 2026 |
| Title Company | STEWART TITLE, STEWART TITLE OF CA INC |
| Amount | Amount on Record |
|---|---|
| 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 | Community Property with Right of Survivorship |
| Address | 6620 MOUNT DIABLO AVE, RIVERSIDE, CA 92506-3925 |
| Document Number | 0000084692 |
|---|---|
| Date | Mar 20, 2026 |
| Instrument | 2026-0084692 |
| Name | STG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2056 |
The 2025 property tax bill for 6620 Mount Diablo Ave was $1,819, up 3.3% from the year before.
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 | $525,300 (+232.45%) Land $158,100 Building $367,200 | ||
| 2025 | $1,819.00 (+3.29%) | $158,009 Land $46,456 Building $111,553 | |
| 2024 | $1,761.00 (+0.4%) | ||
| 2023 | $1,754.00 (+1.86%) | $151,875 Land $44,653 Building $107,222 | |
| 2022 | $1,722.00 | ||
| 2021 | $550,800 |
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.
FEMA maps place 6620 Mount Diablo Ave in Zone X, an area of minimal flood risk.
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.
The area around 6620 Mount Diablo Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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.
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