Riverside County property record for 3871 San Mateo Ave, Riverside, CA 92504
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,520 sqft · built 1952 |
| Lot Size | 0.15 acres (6,534 sqft) |
| Owner | Individual Name on File |
| Last Sale | $620,000 (Jun 2025) |
| Tax Bill | $4,067 (2025) |
| Deeds & Mortgages | Feb 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 227-242-016 |
| Primary APN | 227-242-016 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 1,520 sqft Living Area |
| Gross Area | 1,970 sqft |
| 1st Floor Area | 1,520 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Construction Type | Wood |
| Roof Material | Gravel |
| Lot Area | 6,534 sqft (0.15 acres) |
| Garage Type | Attached |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Old Parcel Number | 051300151 |
|---|---|
| Street Address | 3871 SAN MATEO AVE |
| City | RIVERSIDE |
| State | CA |
| Zip | 92504-2622 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT 51 MB 024/074 HEERS SUB 4 |
| Legal Subdivision | HEERS SUB 4 |
| Legal Lot Number | 51 |
| Jurisdiction | RIVERSIDE CA |
| Township / Civil Division | RIVERSIDE |
| Census Block Group | 4 |
| Census Block | 4009 |
| Census Tract | 31402 |
3871 San Mateo Ave is owned and occupied by an individual who bought it in June 2025.
Source: Riverside County records, as of July 29, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 3871 SAN MATEO AVE, RIVERSIDE, CA 92504-2622 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Man |
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 | Name on Deed |
|---|---|
| Last Sale | Jun 25, 2025 · Amount on File |
| Deed Sale | Jun 25, 2025 · Amount on File |
| Prior Sale | Mar 30, 2015 · Amount on File |
| Deed Document Number | 2025191150 |
| Prior Transfer Date | Feb 24, 2015 |
| Prior Transfer Doc | 0000126849 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | RIVERSIDE CA |
| Property Address | 3871 SAN MATEO AVE, RIVERSIDE, CA 92504-2622 |
| Transaction Type | Mortgage |
| Record Updated | Mar 8, 2021 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 3871 SAN MATEO AVE, RIVERSIDE, CA 92504-2622 |
| Document Number | 0000114710 |
|---|---|
| Date | Feb 23, 2021 |
| Instrument | 2021-0114710 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2051 |
The 2025 property tax bill for 3871 San Mateo Ave was $4,067.
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 | $632,400 (+75.4%) Land $189,720 Building $442,680 | ||
| 2025 | $4,067.00 | $360,545 Land $90,133 Building $270,412 | |
| 2023 | $3,917.00 (+1.87%) | $346,546 Land $86,634 Building $259,912 | |
| 2022 | $3,845.00 | ||
| 2021 | $450,180 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3871 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 3871 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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