Riverside County property record for 3948 San Mateo Ave, Riverside, CA 92504
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,341 sqft · built 1952 |
| Lot Size | 0.15 acres (6,534 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $117,500 (Feb 2000) |
| Tax Bill | $1,992 (2025) |
| Deeds & Mortgages | Oct 2019 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 227-243-006 |
| Primary APN | 227-243-006 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,341 sqft Living Area |
| Gross Area | 1,680 sqft |
| 1st Floor Area | 1,341 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Traditional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Wood Shingle |
| Lot Area | 6,534 sqft (0.15 acres) |
| Garage Type | Detached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Old Parcel Number | 051300206 |
|---|---|
| Street Address | 3948 SAN MATEO AVE |
| City | RIVERSIDE |
| State | CA |
| Zip | 92504-2623 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT 66 MB 024/074 HEERS SUB 4 |
| Legal Subdivision | HEERS SUB 4 |
| Legal Lot Number | 66 |
| Jurisdiction | RIVERSIDE CA |
| Township / Civil Division | RIVERSIDE |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 31402 |
3948 San Mateo Ave is owned and occupied by two individuals who acquired it in August 2019.
Source: Riverside County records, as of July 29, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3948 SAN MATEO AVE, RIVERSIDE, CA 92504-2623 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Feb 29, 2000 · Amount on File |
| Deed Sale | Feb 29, 2000 · Amount on File |
| Deed Document Number | 200073120 |
| Last Transfer Date | Aug 20, 2019 |
| Transfer Doc | 0000436713 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | RIVERSIDE CA |
| Recording Date | Oct 29, 2019 |
| Property Address | 3948 SAN MATEO AVE, RIVERSIDE, CA 92504-2623 |
| Document Number | 0000436713 |
| Instrument Date | Aug 20, 2019 |
| Instrument | 436713 |
| Transaction Type | Transfer |
| Record Updated | Nov 8, 2019 |
| Title Company | FIRST AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 3948 SAN MATEO AVE RIVERSIDE CA 925042623, RIVERSIDE, CA 92504-2623 |
| Document Number | 436714 |
|---|---|
| Date | Oct 29, 2019 |
| Instrument | 436714 |
| Name | NAVY FCU |
|---|---|
| Type | Credit Union |
| Address | VIENNA, VA 22180 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Oct 28, 2049 |
The 2025 property tax bill for 3948 San Mateo Ave was $1,992 with a homeowner's exemption.
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 | $184,176 (+2%) Land $101,887 Building $82,289 | ||
| 2025 | $1,992.00 Homeowner's exemption | $180,566 Land $99,890 Building $80,676 | |
| 2023 | $1,916.00 (+1.91%) Homeowner's exemption | $173,557 Land $96,012 Building $77,545 | |
| 2022 | $1,880.00 | ||
| 2021 | $392,850 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3948 San Mateo 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 3948 San Mateo 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 513 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
May also be available: GeoLinks, T-Mobile, Verizon.
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