Williamson County property record for 305 Hillside Dr, Round Rock, TX 78681
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,357 sqft · built 1979 |
| Lot Size | 0.203 acres (8,855 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $5,423 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3466-0012-0031 |
| Primary APN | R-16-3466-0012-0031 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 1,357 sqft Living Area |
| 1st Floor Area | 1,357 sqft |
| Flooring | Tile |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1988 |
| Exterior Material | Wood |
| Roof Type | Gable |
| Lot Area | 8,855 sqft (0.203 acres) |
| Garage Area | 380 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
| Porch Area | 56 sqft |
| Patio Area | 329 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Connected |
| Account Number | R16346600120031 |
|---|---|
| Street Address | 305 HILLSIDE DR |
| City | ROUND ROCK |
| State | TX |
| Zip | 78681-3756 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S3261 - BRUSHY CREEK SEC 2, BLOCK 12, LOT 31 |
| Legal Subdivision | BRUSHY CREEK SEC 2 |
| Legal Block | 12 |
| Legal Lot Number | 31 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 2 |
| Census Block | 2017 |
| Census Tract | 20514 |
305 Hillside Dr is owned and occupied by two individuals.
Source: Williamson County records, as of September 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 305 HILLSIDE DR, ROUND ROCK, TX 78681-3756 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 305 Hillside Dr was $5,423 with a homeowner's exemption.
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 | $5,423.00 Homeowner's exemption | $301,053 Land $71,500 Building $229,553 | $301,053 Land $71,500 Building $229,553 |
| 2023 | $4,625.00 (-8.58%) Homeowner's exemption | $353,666 Land $83,000 Building $270,666 | $353,666 Land $83,000 Building $270,666 |
| 2022 | $5,059.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 305 Hillside Dr in Zone X, an area of minimal flood risk.
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.
The area around 305 Hillside Dr has no burnable land within ember reach, so its wildfire risk is not rated.
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 | BRUSHY CREEK MUD serves 18,314 people · EPA ID TX2460061 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2025 |
| Lead | 1 ppb (2023–2025) 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 794 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: SOS Communications, VTX Communications, Western Broadband.
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