Williamson County property record for 3852 Sapphire Loop, Round Rock, TX 78681 · Last verified October 2025
| Property Type | Single Family Home |
|---|---|
| Details | 4 ba · 4,016 sqft · built 2007 |
| Owner | 2 Individual Names on File |
| Tax Bill | $9,175 (2025) |
| Deeds & Mortgages | Jul 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | R475418 |
| Primary APN | R475418 |
|---|---|
| Alternative APNs |
|
| Full Baths | 4 Baths |
|---|---|
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 4,016 sqft Living Area |
| 1st Floor Area | 2,259 sqft |
| 2nd Floor Area | 1,757 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2007 |
|---|---|
| Exterior Material | Combination |
| Foundation Type | Slab (Mat/Raft) |
| Garage Area | 735 sqft |
| Parking Spaces | 3 Parking Spaces |
| Pool Area | 395 sqft |
| Porch | Open Porch |
| Porch Area | 272 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R475418 |
|---|---|
| Street Address | 3852 SAPPHIRE LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-2428 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S9086 - MAYFIELD RANCH SEC 8, BLOCK A, LOT 20 |
| Legal Subdivision | MAYFIELD RANCH |
| Legal Block | A |
| Legal Lot Number | 20 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 20609 |
Source: Williamson County records · APN R475418
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 3852 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2428 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 30, 2015 |
| Deed Sale | Nov 30, 2015 |
| Prior Sale | Nov 02, 2007 |
| Deed Document Number | 2015104009 |
| Record Updated | Jun 08, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Property Address | 3852 SAPPHIRE LOOP, ROUND ROCK, TX 78681-2428 |
| Document Number | 0000076449 |
| Instrument Date | Jul 06, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Jul 29, 2020 |
| Title Company | TEXAS NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 3852 SAPPHIRE LOOP ROUND ROCK TX 786812428, ROUND ROCK, TX 78681-2428 |
| Document Number | 0000076449 |
|---|---|
| Date | Jul 13, 2020 |
| Instrument | 76449 |
| Name | UNIVERSITY CU |
|---|---|
| Type | Credit Union |
| Address | AUSTIN, TX 78759 |
| Amount | Amount Recorded |
|---|---|
| Term | 180 Months |
| Due | Jul 12, 2035 |
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 | $9,175.00 (+5.8%) Homeowner's exemption Senior Citizen's exemption | $824,264 (+7.38%) Land $128,000 Building $696,264 | $824,264 (+7.38%) Land $128,000 Building $696,264 |
| 2023 | $8,672.00 (-20.11%) Homeowner's exemption Senior Citizen's exemption | $767,643 Land $132,000 Building $635,643 | $767,643 Land $132,000 Building $635,643 |
| 2022 | $10,855.00 |
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 |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| 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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