Williamson County property record for 16818 Mouse Trap Dr, Round Rock, TX 78681
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 2,283 sqft · built 1996 |
| Lot Size | 0.257 acres (11,180 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $270,000 (Jul 2007) |
| Tax Bill | $9,121 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3565-000A-0040 |
| Primary APN | R-16-3565-000A-0040 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 2,283 sqft Living Area |
| 1st Floor Area | 2,283 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1996 |
|---|---|
| Effective Year Built | Effective 1996 |
| Exterior Material | Stone |
| Roof Type | Hip |
| Lot Area | 11,180 sqft (0.257 acres) |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 387 sqft |
| Patio Area | 90 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Connected |
| Account Number | R163565000A0040 |
|---|---|
| Street Address | 16818 MOUSE TRAP DR |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-5408 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S5747 - CAT HOLLOW SEC 13, BLOCK A, LOT 40 |
| Legal Subdivision | CAT HOLLOW SEC 13 |
| Legal Block | A |
| Legal Lot Number | 40 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 20515 |
16818 Mouse Trap Dr is owned and occupied by two individuals who bought it in July 2007.
Source: Williamson County records, as of September 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 16818 MOUSE TRAP DR, ROUND ROCK, TX 78681-5408 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 3, 2007 · Amount on File |
| Deed Sale | Jul 3, 2007 · Amount on File |
| Prior Sale | Jul 5, 2005 · Amount on File |
| Deed Document Number | 200756001 |
| Prior Transfer Date | Jun 30, 2005 |
| Prior Transfer Doc | 0000050793 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 16818 Mouse Trap Dr was $9,121 with a homeowner's exemption.
Source: Williamson County assessment roll, as of September 11, 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Unified School District | Round Rock Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $9,121.00 Homeowner's exemption | $614,866 | $630,622 Land $159,000 Building $471,622 |
| 2023 | $7,699.00 (-4.95%) Homeowner's exemption | $583,559 Land $160,000 Building $423,559 | $583,559 Land $160,000 Building $423,559 |
| 2022 | $8,100.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 16818 Mouse Trap Dr in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 5, 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.
Wildfire risk around 16818 Mouse Trap Dr is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.3% of Texas |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | BRUSHY CREEK MUD serves 18,314 people · EPA ID TX2460061 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2025 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 618 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, Google Fiber, SOS Communications, VTX Communications, Western Broadband.
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