Williamson County property record for 11801 Tanglebriar Trl, Austin, TX 78750
| Property Type | Exempt (Full or Partial) |
|---|---|
| Details | 56,428 sqft · built 1981 |
| Lot Size | 8.66 acres (377,230 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $146,995 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3761-EX0A-0001 |
| Primary APN | R-16-3761-EX0A-0001 |
|---|---|
| Alternative APNs |
|
| Stories | 1 Story |
|---|---|
| Building Area | 56,428 sqft Gross Area |
| 1st Floor Area | 56,428 sqft |
| Year Built | Built 1981 |
|---|---|
| Effective Year Built | Effective 1994 |
| Lot Area | 377,230 sqft |
| Account Number | R163761EX0A0001 |
|---|---|
| Street Address | 11801 TANGLEBRIAR TRL |
| City | AUSTIN |
| State | TX |
| Zip | 78750-1501 |
| Property Category | Other |
| Property Type | Other > Exempt (Full or Partial) |
| Legal Description | S3596 - ELEM SCHOOL AT ANDERSON MILL PH 2, BLOCK A, LOT 1, ACRES 8.66 |
| Legal Subdivision | ELEM SCHOOL AT ANDERSON MILL PH 2 |
| Legal Block | A |
| Legal Lot Number | 1 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 20404 |
Source: Williamson County records, as of September 11, 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 Record |
|---|---|
| Mailing Address | 1311 ROUND ROCK AVE, ROUND ROCK, TX 78681-4941 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Williamson County assessment roll, as of September 11, 2026
| Type | Name |
|---|---|
| State | Texas |
| Municipality | Austin City |
| County | Williamson County |
| Unified School District | Round Rock Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | Additional exemption filed | $7,422,569 (-) Land $1,779,769 Building $5,642,800 | $7,422,569 (-) Land $1,779,769 Building $5,642,800 |
| 2023 | $146,995.00 Additional exemption filed | $7,422,569 Land $1,779,769 Building $5,642,800 | $7,422,569 Land $1,779,769 Building $5,642,800 |
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 7 in force |
| Nearby Flood Claims | 3 (1980–1991) |
| Most Recent Claim | Aug 1991 · rainfall accumulation |
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 80% of the US · lower than 94% of Texas |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
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 AUSTIN WATER & WASTEWATER serves 1,115,323 people · EPA ID TX2270001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2023 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | Turbidity resolved · Feb 2022 |
|---|---|
| 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 403 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Google Fiber Fiber | 8,000 / 8,000 |
| Spectrum Cable | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Astound Broadband, Western Broadband.
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