Williamson County property record for 16405 Castletroy Dr, Austin, TX 78717
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,921 sqft · built 2002 |
| Lot Size | 0.173 acres (7,533 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $340,800 (Dec 2019) |
| Tax Bill | $9,686 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3020-000A-0068 |
| Primary APN | R-16-3020-000A-0068 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,921 sqft Living Area |
| 1st Floor Area | 1,921 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2002 |
|---|---|
| Effective Year Built | Effective 2002 |
| Exterior Material | Brick Veneer |
| Roof Type | Hip |
| Lot Area | 7,533 sqft (0.173 acres) |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 238 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R163020000A0068 |
|---|---|
| Street Address | 16405 CASTLETROY DR |
| City | AUSTIN |
| State | TX |
| Zip | 78717-5523 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S7676 - AVERY RANCH EAST PH 1, BLOCK A, LOT 68 |
| Legal Subdivision | AVERY RANCH EAST PH 1 |
| Legal Phase | 1 |
| Legal Block | A |
| Legal Lot Number | 68 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 20509 |
Source: Williamson County records, as of September 11, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 7502 BLUE BEACH CV, AUSTIN, TX 78759-6466 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 31, 2019 · Amount on File |
| Deed Sale | Dec 31, 2019 · Amount on File |
| Prior Sale | Jun 7, 2013 · Amount on File |
| Deed Document Number | 2019126759 |
| Prior Transfer Date | Dec 27, 2019 |
| Prior Transfer Doc | 0000126759 |
| 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 | $9,686.00 (+5.78%) | $477,683 (-1.42%) Land $106,000 Building $371,683 | $477,683 (-1.42%) Land $106,000 Building $371,683 |
| 2023 | $9,157.00 (-22.23%) | $484,568 Land $115,000 Building $369,568 | $484,568 Land $115,000 Building $369,568 |
| 2022 | $11,775.00 |
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 | 3 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 |
|---|
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 489 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| Google Fiber Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, VTX Communications, Western Broadband.
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