Williamson County property record for 16403 Hillside Dr, Austin, TX 78728
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 1,673 sqft · built 1978 |
| Lot Size | 0.263 acres (11,439 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $4,245 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R16472000050013W |
| Primary APN | R16472000050013W |
|---|---|
| Alternative APNs |
|
| Full Baths | 1 Bath |
|---|---|
| Stories | 1 Story |
| Building Area | 1,673 sqft Living Area |
| 1st Floor Area | 1,673 sqft |
| Flooring | Carpet |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1981 |
| Exterior Material | Wood |
| Roof Type | Gable |
| Lot Area | 11,439 sqft (0.263 acres) |
| Garage Type | Detached |
| Garage Area | 960 sqft |
| Parking Spaces | 7 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R16472000050013 |
|---|---|
| Street Address | 16403 HILLSIDE DR |
| City | AUSTIN |
| State | TX |
| Zip | 78728-1223 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S5785 - NORTHRIDGE ACRES REVISED, BLOCK 5, LOT 13 PT, PT/GTR |
| Legal Subdivision | NORTHRIDGE ACRES REVISED |
| Legal Block | 5 |
| Legal Lot Number | 13 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 2 |
| Census Block | 2023 |
| Census Tract | 20513 |
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 | 16403 HILLSIDE DR, AUSTIN, TX 78728-1223 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 6, 2012 |
| Deed Sale | Aug 6, 2012 |
| Prior Sale | Jan 17, 2012 |
| Deed Document Number | 201262460 |
| Record Updated | Oct 29, 2026 |
Source: Williamson County assessment roll, as of September 11, 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Unified School District | Round Rock Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $4,245.00 (-5.52%) | $218,236 (-26.84%) Land $48,100 Building $170,136 | $218,236 (-26.84%) Land $48,100 Building $170,136 |
| 2023 | $4,493.00 (-11.1%) | $298,299 Land $35,750 Building $262,549 | $298,299 Land $35,750 Building $262,549 |
| 2022 | $5,054.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.3% 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 413 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 · Fixed Wireless 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 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, Western Broadband.
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