Williamson County property record for 1123 Greenbriar Loop, Round Rock, TX 78664
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,058 sqft · built 1984 |
| Lot Size | 0.115 acres (5,041 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $3,691 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3964-000C-0021 |
| Primary APN | R-16-3964-000C-0021 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 1,058 sqft Living Area |
| 1st Floor Area | 1,058 sqft |
| Flooring | Carpet |
| Interior Walls | Custom/Decorative |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1984 |
|---|---|
| Exterior Material | Wood |
| Foundation Type | Slab (Mat/Raft) |
| Roof Type | Gable |
| Lot Area | 5,041 sqft |
| Garage Area | 308 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 244 sqft |
| Deck Area | 140 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R064693 |
|---|---|
| Street Address | 1123 GREENBRIAR LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78664-6953 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | GREENSLOPES AT LAKECREEK SEC 7, BLOCK C, LOT 21 |
| Legal Subdivision | GREENSLOPES AT LAKECREEK |
| Legal Block | C |
| Legal Lot Number | 21 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 20704 |
Source: Williamson County assessment roll, as of August 1, 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 |
|---|---|
| Mailing Address | 1123 GREENBRIAR LOOP, ROUND ROCK, TX 78664-6953 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Apr 1, 1985 |
| Deed Sale | Apr 1, 1985 |
| Deed Document Number | 0001114145 |
| Record Updated | Jun 7, 2026 |
Source: Williamson County assessment roll, as of August 1, 2025
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Municipality | Round Rock City |
| Unified School District | Round Rock Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $3,691.00 (+15.02%) Homeowner's exemption | $259,470 (-8.92%) Land $65,000 Building $194,470 | $259,470 (-8.92%) Land $65,000 Building $194,470 |
| 2023 | $3,209.00 (-11.72%) Homeowner's exemption | $284,880 Land $65,000 Building $219,880 | $284,880 Land $65,000 Building $219,880 |
| 2022 | $3,635.00 |
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 | 1 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 | Not rated no burnable land within ember reach |
|---|
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 593 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Google Fiber Fiber | 8,000 / 8,000 |
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Optimum Communications, SOS Communications, T-Mobile USA.
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