Riverside County property record for 521 Alta Mesa Dr, Riverside, CA 92507
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,242 sqft · built 1959 |
| Lot Size | 0.19 acres (8,276 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $768 (2025) |
| Deeds & Mortgages | Sep 2025 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 251-084-010 |
| Primary APN | 251-084-010 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,242 sqft Living Area |
| Gross Area | 1,816 sqft |
| 1st Floor Area | 1,242 sqft |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1959 |
| Construction Type | Wood |
| Roof Material | Gravel |
| Lot Area | 8,276 sqft (0.19 acres) |
| Garage Type | Attached |
| Garage Area | 456 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Old Parcel Number | 122602042 |
|---|---|
| Street Address | 521 ALTA MESA DR |
| City | RIVERSIDE |
| State | CA |
| Zip | 92507-3120 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1065 |
| Legal Description | LOT 42 MB 031/038 UNIVERSITY HIGHLANDS 1 |
| Legal Subdivision | UNIVERSITY HIGHLANDS 1 |
| Legal Lot Number | 42 |
| Jurisdiction | RIVERSIDE CA |
| Township / Civil Division | RIVERSIDE |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 42213 |
521 Alta Mesa Dr is held in a trust since September 2025.
Source: Riverside County records, as of August 26, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 7715 WESTPARK DR, RIVERSIDE, CA 92506-5413 |
| Owner Type | Company |
| Vesting | Trust, Family Living Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Sep 9, 2025 |
| Transfer Doc | 0000280665 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | RIVERSIDE CA |
| Recording Date | Sep 12, 2025 |
| Property Address | 521 ALTA MESA DR, RIVERSIDE, CA 92507-3120 |
| Document Number | 0000280665 |
| Map Reference | MB 31 PG 38&39 |
| Instrument Date | Sep 9, 2025 |
| Instrument | 2025-0280665 |
| Transaction Type | Transfer |
| Record Updated | Sep 24, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Living Trust |
| Address | 7715 WESTPARK DR, RIVERSIDE, CA 92506-5413 |
The 2025 property tax bill for 521 Alta Mesa Dr was $768.
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 | $64,558 (+2%) Land $18,627 Building $45,931 | ||
| 2025 | $768.00 | $63,293 Land $18,262 Building $45,031 | |
| 2023 | $742.00 (+1.78%) | $60,837 Land $17,553 Building $43,284 | |
| 2022 | $729.00 | ||
| 2021 | $533,070 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 521 Alta Mesa Dr in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1995.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 2 (1995–1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 521 Alta Mesa Dr is low, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 | 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 444 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 |
| Verizon Fixed Wireless | 1,000 / 75 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: GeoLinks.
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