Williamson County property record for 16508 Castletroy Dr, Austin, TX 78717
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,849 sqft · built 2004 |
| Lot Size | 0.132 acres (5,742 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $7,417 (2025) |
| Deeds & Mortgages | Oct 2022 Line of Credit Sep 2022 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3020-000A-0011 |
| Primary APN | R-16-3020-000A-0011 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 1,849 sqft Living Area |
| 1st Floor Area | 1,849 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 2004 |
|---|---|
| Effective Year Built | Effective 2004 |
| Exterior Material | Stone |
| Roof Material | Other |
| Lot Area | 5,742 sqft (0.132 acres) |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 183 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R163020000A0011 |
|---|---|
| Street Address | 16508 CASTLETROY DR |
| City | AUSTIN |
| State | TX |
| Zip | 78717-5524 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S7676 - AVERY RANCH EAST PH 1, BLOCK A, LOT 11 |
| Legal Subdivision | AVERY RANCH EAST PH 1 |
| Legal Phase | 1 |
| Legal Block | A |
| Legal Lot Number | 11 |
| 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 | Individual Name on Record |
|---|---|
| Mailing Address | 16508 CASTLERAY DR, AUSTIN, TX 78717 |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Oct 11, 2022 | Deed of Trust, Mortgage · Line of Credit UNITED HERITAGE CU |
| Sep 1, 2022 | Warranty Deed, Transfer AUSTIN TITLE COMPANY |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 1, 2022 |
| Deed Sale | Sep 1, 2022 |
| Prior Sale | Jun 6, 2016 · Amount on Record |
| Deed Document Number | 2022103392 |
| Prior Transfer Date | Jun 3, 2016 |
| Prior Transfer Doc | 0000048470 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Property Address | 16508 CASTLETROY DR, AUSTIN, TX 78717-5524 |
| Transaction Type | Mortgage |
| Record Updated | Oct 21, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000116843 |
|---|---|
| Date | Oct 11, 2022 |
| Instrument | 2022116843 |
| Name | UNITED HERITAGE CU |
|---|---|
| Type | Credit Union |
| Address | AUSTIN, TX 78759 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 240 Months |
| Due | Oct 5, 2042 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Recording Date | Sep 1, 2022 |
| Property Address | 16508 CASTLETROY DR, AUSTIN, TX 78717-5524 |
| Document Number | 0000103392 |
| Map Reference | CAB U SL 62-70 |
| Instrument Date | Aug 31, 2022 |
| Instrument | 2022103392 |
| Transaction Type | Transfer |
| Record Updated | Oct 26, 2023 |
| Title Company | AUSTIN TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 2105 CHARLIE DAYER DR, CONWAY, AR 72034-7322 |
| Name | Verified Name |
|---|---|
| Address | 16508 CASTLETROY DR, AUSTIN, TX 78717-5524 |
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 | $7,417.00 (-2.09%) | $460,709 (-1.52%) Land $106,000 Building $354,709 | $460,709 (-1.52%) Land $106,000 Building $354,709 |
| 2024 | $7,575.00 (+2.1%) | ||
| 2023 | $7,419.00 (-0.16%) Homeowner's exemption | $467,821 Land $115,000 Building $352,821 | $467,821 Land $115,000 Building $352,821 |
| 2022 | $7,431.00 |
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 | Low lower than 99.8% of the US · lower than 99.8% of Texas |
|---|---|
| Wildfire Likelihood | Under 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 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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