Williamson County property record for 3890 Co Rd 123, Round Rock, TX 78664
| Property Type | Single Family Home |
|---|---|
| Details | 2.5 ba · 1,696 sqft · built 1984 |
| Lot Size | 1 acres (43,560 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $4,501 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | R16042200000014B |
| Primary APN | R16042200000014B |
|---|---|
| Alternative APNs |
|
| Full Baths | 2.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,696 sqft Living Area |
| 1st Floor Area | 1,696 sqft |
| Flooring | Carpet |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1984 |
|---|---|
| Effective Year Built | Effective 1984 |
| Exterior Material | Wood |
| Roof Type | Gable |
| Lot Area | 43,560 sqft (1 acres) |
| Garage Type | Carport |
| Garage Area | 500 sqft |
| Carport | Carport |
| Carport Area | 500 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Slab |
|---|---|
| Porch Area | 318 sqft |
| Deck Area | 140 sqft |
| Utility Building | 120 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R16042200000014 |
|---|---|
| Street Address | 3890 COUNTY ROAD 123 |
| City | ROUND ROCK |
| State | TX |
| Zip | 78664-9768 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | AW0422 MCNUTT, R. SUR., ACRES 1.0 |
| Legal Subdivision | MCNUTT, R. SUR. |
| Legal Block | 2 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | TAYLOR |
| Census Block Group | 2 |
| Census Block | 2030 |
| Census Tract | 20816 |
Source: Williamson County records · APN R16042200000014B
Assessment roll updated January 5, 2026 · Last verified May 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3890 COUNTY ROAD 123, ROUND ROCK, TX 78664-9768 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Record Updated | Jun 08, 2026 |
Source: Williamson County records · Assessment roll updated January 5, 2026 · Last verified May 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Unified School District | Round Rock Independent School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $4,501.00 (+19.29%) Homeowner's exemption | $381,732 (+6.81%) | $408,789 (+14.38%) Land $160,000 Building $248,789 |
| 2023 | $3,773.00 (-11.2%) Homeowner's exemption | $357,387 Land $160,000 Building $197,387 | $357,387 Land $160,000 Building $197,387 |
| 2022 | $4,249.00 |
Source: FEMA National Flood Hazard Layer, Williamson County (48491C), as of October 5, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 484910208162, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 15 policies |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 1 (2015) |
| Most Recent Claim | May 2015 · Severe Storms, Tornadoes, Straight-line Winds And Flooding |
| Wildfire Risk | Low lower than 65% of the US · lower than 90% of Texas |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Google Fiber Fiber | 8,000 / 8,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: SOS Communications.
Based on FCC filings for 101 locations within half a mile of this property.
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