Tuolumne County property record for 10990 Union Hill Rd, Sonora, CA 95370
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 2 ba · 2,254 sqft · built 1991 |
| Lot Size | 4.86 acres (212,137 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $6,007 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-020-046-000 |
| Primary APN | 033-020-046-000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 1 Room |
| Stories | 2 Stories |
| Building Area | 2,254 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1991 |
|---|---|
| Effective Year Built | Effective 1991 |
| Construction Type | Wood |
| Lot Area | 212,137 sqft |
| Cooling System | None |
|---|
| Old Parcel Number | 033-020-046 |
|---|---|
| Street Address | 10990 UNION HILL RD |
| City | COLUMBIA |
| State | CA |
| Zip | 95310 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RE-3 |
| Legal Description | PAR A PM 31-28 POR SEC 23 T2N R14E 4.87AC |
| Legal Range | 14E |
| Legal Township | 02N |
| Legal Section | 23 |
| Legal Subdivision | COLUMBIA PROPER |
| Jurisdiction | TUOLUMNE CA |
| Township / Civil Division | TWAIN HARTE-TUOLUMNE CITY |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 2101 |
10990 Union Hill Rd is owner-occupied and held in a trust since November 2012.
Source: Tuolumne County records, as of July 7, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 10990 UNION HILL RD, SONORA, CA 95370-9089 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 Transfer Date | Nov 7, 2012 |
| Transfer Doc | 0000016065 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 10990 Union Hill Rd was $6,007 with a homeowner's exemption.
Source: Tuolumne County assessment roll, as of July 7, 2026
| Type | Name |
|---|---|
| State | California |
| County | Tuolumne County |
| Elementary School District | Columbia Union Elementary School District (KG - 08) |
| Secondary School District | Sonora Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $576,156 (+2%) Land $147,724 Building $428,432 | ||
| 2025 | $6,007.00 Homeowner's exemption | $564,860 Land $144,828 Building $420,032 | |
| 2023 | $5,785.00 (+1.97%) Homeowner's exemption | $542,928 Land $139,205 Building $403,723 | $680,940 |
| 2022 | $5,673.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 10990 Union Hill Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 21, 2022
| 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.
Wildfire risk around 10990 Union Hill Rd is high, ranking above 85% of the US, with a 0.6% 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 | 0.6% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 22 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| Cal.net Fixed Wireless | 100 / 20 |
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