Williamson County property record for 3977 Sapphire Loop, Round Rock, TX 78681 · Last verified October 2025
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 2,462 sqft · built 2008 |
| Owner | Individual Name on File |
| Tax Bill | $4,424 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R475490 |
| Primary APN | R475490 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 2,462 sqft Living Area |
| 1st Floor Area | 2,462 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2008 |
|---|---|
| Effective Year Built | Effective 2009 |
| Exterior Material | Stone |
| Foundation Type | Slab (Mat/Raft) |
| Garage Area | 730 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 120 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R475490 |
|---|---|
| Street Address | 3977 SAPPHIRE LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-2429 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S9099 - MAYFIELD RANCH SEC 9, BLOCK C, LOT 14 |
| Legal Subdivision | MAYFIELD RANCH |
| Legal Block | C |
| Legal Lot Number | 14 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 20609 |
Source: Williamson County records · APN R475490
Assessment roll updated August 1, 2025 · Last verified October 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 File |
|---|---|
| Co-owner | Verified Secondary Owner |
| Mailing Address | 3977 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2429 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 01, 2010 |
| Deed Sale | Jul 01, 2010 |
| Prior Sale | Apr 15, 2010 · Amount on Record |
| Deed Document Number | 2010043661 |
| Record Updated | Jun 07, 2026 |
Source: Williamson County records · Assessment roll updated August 1, 2025 · Last verified October 2025
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Municipality | Round Rock City |
| Unified School District | Leander 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 | $4,424.00 (+4.24%) Homeowner's exemption Senior Citizen's exemption | $577,189 (+4.66%) Land $128,000 Building $449,189 | $577,189 (+4.66%) Land $128,000 Building $449,189 |
| 2023 | $4,244.00 (-29.72%) Homeowner's exemption Senior Citizen's exemption | $551,473 Land $132,000 Building $419,473 | $551,473 Land $132,000 Building $419,473 |
| 2022 | $6,039.00 |
Source: FEMA National Flood Hazard Layer, Williamson County (48491C), updated October 5, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 484910206091, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Policies | 3 in force |
| Wildfire Risk | Low above 32% of the US · above 9% of Texas |
|---|---|
| Wildfire Likelihood | About 1 in 3,846 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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, availability as of December 31, 2025 · Published October 2026 · based on 537 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Spectrum | Fiber | 1,000 / 1,000 |
| Verizon | Fixed Wireless | 300 / 20 |
| Electronic Corporate Pages | Fixed Wireless (unlicensed) | 200 / 40 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Spectrum. Availability varies by address; speeds are provider-advertised maximums, not measured.
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