Williamson County property record for 4101 Sapphire Loop, Round Rock, TX 78681
| Property Type | Single Family Home |
|---|---|
| Details | 5 ba · 3,906 sqft · built 2011 |
| Owner | Individual Name on Record |
| Tax Bill | $11,715 (2025) |
| Deeds & Mortgages | Jan 2021 Mortgage Feb 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | R475428 |
| Primary APN | R475428 |
|---|---|
| Alternative APNs |
|
| Full Baths | 5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 3,906 sqft Living Area |
| 1st Floor Area | 2,208 sqft |
| 2nd Floor Area | 1,698 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2011 |
|---|---|
| Effective Year Built | Effective 2013 |
| Exterior Material | Combination |
| Foundation Type | Slab (Mat/Raft) |
| Garage Area | 661 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 196 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R475428 |
|---|---|
| Street Address | 4101 SAPPHIRE LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-2431 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S9086 - MAYFIELD RANCH SEC 8, BLOCK B, LOT 7 |
| Legal Subdivision | MAYFIELD RANCH |
| Legal Block | B |
| Legal Lot Number | 7 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 20609 |
Source: Williamson County records, as of October 2, 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 4101 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2431 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Jan 27, 2021 | Deed of Trust, Mortgage · Conventional Mortgage WILLOW BEND MORTGAGE CO |
| Feb 15, 2018 | Warranty Deed, Transfer ALTERRA HM LNS |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Feb 15, 2018 |
| Deed Sale | Feb 15, 2018 |
| Prior Sale | Jun 22, 2012 |
| Deed Document Number | 2018012891 |
| Record Updated | Jun 7, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Property Address | 4101 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2431 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | ALAMO TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000012769 |
|---|---|
| Date | Jan 27, 2021 |
| Instrument | 2021012769 |
| Name | WILLOW BEND MORTGAGE CO |
|---|---|
| Type | Mortgage Company |
| Address | PLANO, TX 75093 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2051 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Recording Date | Feb 15, 2018 |
| Property Address | 4101 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2431 |
| Document Number | 0000012891 |
| Instrument Date | Feb 9, 2018 |
| Instrument | 12891 |
| Transaction Type | Transfer |
| Record Updated | Mar 1, 2018 |
| Title Company | OTHER |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4101 SAPPHIRE LOOP ROUND ROCK TX 786812431, ROUND ROCK, TX 78681-2431 |
| Document Number | 12892 |
|---|---|
| Date | Feb 15, 2018 |
| Instrument | 12892 |
| Name | ALTERRA HM LNS |
|---|---|
| Address | LAS VEGAS, NV 89145 |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Feb 14, 2048 |
Source: Williamson County assessment roll, as of August 1, 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 | $11,715.00 (+12.56%) Homeowner's exemption | $765,789 (+7.58%) Land $128,000 Building $637,789 | $765,789 (+7.58%) Land $128,000 Building $637,789 |
| 2023 | $10,408.00 (-4.1%) Homeowner's exemption | $711,865 Land $132,000 Building $579,865 | $711,865 Land $132,000 Building $579,865 |
| 2022 | $10,853.00 |
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 |
|---|---|
| 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 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures