Williamson County property record for 3848 Sapphire Loop, Round Rock, TX 78681
| Property Type | Single Family Home |
|---|---|
| Details | 3.5 ba · 3,779 sqft · built 2007 |
| Lot Size | 0.189 acres (8,230 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $5,608 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R17W334608A0019 |
| Primary APN | R17W334608A0019 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Total Rooms | 3 Rooms |
| Stories | 2 Stories |
| Building Area | 3,779 sqft Living Area |
| 1st Floor Area | 2,361 sqft |
| 2nd Floor Area | 1,418 sqft |
| Flooring | Tile |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2007 |
|---|---|
| Effective Year Built | Effective 2007 |
| Exterior Material | Stone |
| Roof Material | Other |
| Lot Area | 8,230 sqft (0.189 acres) |
| Garage Area | 748 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Slab |
| Porch Area | 294 sqft |
| Patio Area | 75 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R17W334608A0019 |
|---|---|
| Street Address | 3848 SAPPHIRE LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-2428 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | SF2 |
| Legal Description | S9086 - MAYFIELD RANCH SEC 8, BLOCK A, LOT 19 |
| Legal Subdivision | MAYFIELD RANCH SEC 8 |
| Legal Block | A |
| Legal Lot Number | 19 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 20609 |
Source: Williamson County records, as of April 28, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 3848 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2428 |
| Owner Type | Company |
| Vesting | Life Tenant |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 10, 2020 |
| Deed Sale | Feb 10, 2020 |
| Prior Sale | Oct 25, 2019 |
| Deed Document Number | 202013357 |
| Last Transfer Date | Apr 16, 2024 |
| Transfer Doc | 0000029714 |
| Record Updated | Sep 20, 2026 |
Source: Williamson County assessment roll, as of September 15, 2025
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Municipality | Round Rock City |
| Unified School District | Leander Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $5,608.00 (-7.11%) | $715,529 (+1.29%) | $750,811 (+6.28%) Land $128,000 Building $622,811 |
| 2023 | $6,037.00 (-25.78%) Homeowner's exemption Senior Citizen's exemption | $706,436 Land $132,000 Building $574,436 | $706,436 Land $132,000 Building $574,436 |
| 2022 | $8,134.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective October 5, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 91% of Texas |
|---|---|
| Wildfire Likelihood | 0.03% 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 | CITY OF ROUND ROCK serves 130,662 people · EPA ID TX2460003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2023 |
| Lead | 5 ppb (2021–2023) 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 537 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Spectrum Fiber · Cable in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Western Broadband Fixed Wireless | 200 / 40 |
| T-Mobile Fixed Wireless | 100 / 20 |
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