Williamson County property record for 3520 Shellcastle Ln, Round Rock, TX 78681 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3.5 ba · 3,161 sqft · built 2006 |
| Lot Size | 0.257 acres (11,176 sqft) |
| Owner | Company Name on File |
| Tax Bill | $9,694 (2025) |
| Deeds & Mortgages | Sep 2021 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-5693-000G-0009 |
| Primary APN | R-16-5693-000G-0009 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Building Area | 3,161 sqft Living Area |
| 1st Floor Area | 1,760 sqft 1st Floor |
| 2nd Floor Area | 1,401 sqft 2nd Floor |
| Stories | 2 Stories |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplace |
| Year Built | Built 2006 |
|---|---|
| Effective Year Built | Effective 2006 |
| Exterior Material | Brick Veneer |
| Roof Type | Hip |
| Lot Area | 11,176 sqft (0.257 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Area | 636 sqft Garage |
| Porch | Open Porch |
| Porch Area | 107 sqft Porch |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R165693000G0009 |
|---|---|
| Street Address | 3520 SHELLCASTLE LN |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-1143 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S8720 - VILLAGE AT MAYFIELD RANCH PH 3, BLOCK G, LOT 9 |
| Legal Subdivision | VILLAGE AT MAYFIELD RANCH PH 3 |
| Legal Phase | 3 |
| Legal Block | G |
| Legal Lot Number | 9 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 20608 |
Source: Williamson County records · APN R-16-5693-000G-0009
Assessment roll updated September 15, 2025 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 5900 BALCONES DR, 100, AUSTIN, TX 78731-4298 |
| Owner Type | Company |
| Vesting | Limited Liability Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Sep 01, 2021 |
| Deed Sale | Sep 01, 2021 |
| Prior Sale | Aug 08, 2016 · Amount on Record |
| Deed Document Number | 2021133595 |
| Prior Transfer Date | Aug 04, 2016 |
| Prior Transfer Doc | 0000072216 |
| Record Updated | Sep 20, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Recording Date | Sep 01, 2021 |
| Property Address | 3520 SHELLCASTLE LN, ROUND ROCK, TX 78681-1143 |
| Document Number | 0000133595 |
| Map Reference | CAB Z SL 283-285 |
| Instrument Date | Aug 28, 2021 |
| Instrument | 2021133595 |
| Transaction Type | Transfer |
| Record Updated | Sep 14, 2021 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 4231 SAMSON WAY, 4231, SAN JOSE, CA 95124-4647 |
| Name | Verified Name |
|---|---|
| Address | 5900 BALLONES DRIVE #100 # 100, 100, AUSTIN, TX 78731-4298 |
Source: Williamson County records · Assessment roll updated September 15, 2025 · Last verified August 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Municipality | Round Rock City |
| Unified School District | Round Rock 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 | $9,694.00 | $637,124 (+13.56%) Land $120,000 Building $517,124 | $637,124 (+13.56%) Land $120,000 Building $517,124 |
| 2024 | $9,694.00 (-1.48%) | ||
| 2023 | $9,840.00 (-20.18%) | $561,044 Land $136,000 Building $425,044 | $561,044 Land $136,000 Building $425,044 |
| 2022 | $12,327.00 |
Source: FEMA National Flood Hazard Layer, Williamson County (48491C), updated October 5, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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