Tuolumne County property record for 17921 Plateau Rd, Sonora, CA 95370
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,534 sqft · built 1955 |
| Lot Size | 0.61 acres (26,572 sqft) |
| Owner | Individual Name on File |
| Last Sale | $155,000 (Feb 2003) |
| Tax Bill | $3,078 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 048-140-028-000 |
| Primary APN | 048-140-028-000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 1,534 sqft Living Area |
| 1st Floor Area | 1,534 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Modern |
| Exterior Material | Combination |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 26,572 sqft (0.61 acres) |
| Cooling System | None |
|---|---|
| Heating System | Floor/Wall Furnace |
| Old Parcel Number | 048-140-028 |
|---|---|
| Street Address | 17921 PLATEAU RD |
| City | SONORA |
| State | CA |
| Zip | 95370-8900 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-1 |
| Legal Description | POR SEC 17 18 T2N R16E .61AC |
| Legal Subdivision | HUNTS ROAD |
| Jurisdiction | TUOLUMNE CA |
| Township / Civil Division | TWAIN HARTE-TUOLUMNE CITY |
| Census Block Group | 3 |
| Census Block | 3019 |
| Census Tract | 3101 |
17921 Plateau Rd is owned and occupied by an individual who bought it in February 2003.
Source: Tuolumne County records, as of July 7, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | PO BOX 345, SOULSBYVILLE, CA 95372-0345 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Feb 19, 2003 · Amount on File |
| Deed Sale | Feb 19, 2003 · Amount on File |
| Deed Document Number | 20033916 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 17921 Plateau Rd was $3,078 with a homeowner's exemption.
Source: Tuolumne County assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | California |
| County | Tuolumne County |
| Secondary School District | Summerville Union High School District (09 - 12) |
| Elementary School District | Twain Harte School District (KG - 08) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $301,925 (+2%) Land $96,019 Building $205,906 | ||
| 2025 | $3,078.00 Homeowner's exemption | $296,006 Land $94,137 Building $201,869 | |
| 2023 | $2,858.00 (-4.45%) Homeowner's exemption | $284,514 Land $90,483 Building $194,031 | $348,390 |
| 2022 | $2,991.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 17921 Plateau Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 21, 2022 · 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 |
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 17921 Plateau Rd is high, ranking above 85% of the US, with a 0.7% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 85% of the US · above 65% of California |
|---|---|
| Wildfire Likelihood | 0.7% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | TUD - UPPER BASIN WATER SYSTEM serves 13,331 people · EPA ID CA5510012 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2024 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 18 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| Cal.net Fixed Wireless | 100 / 20 |
| Conifer Communications Fixed Wireless | 100 / 10 |
| T-Mobile Fixed Wireless | 25 / 3 |
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