Williamson County property record for 8331 Fathom Cir, Austin, TX 78750
| Property Type | Duplex |
|---|---|
| Details | 4 ba · 2,314 sqft · built 1977 |
| Lot Size | 0.209 acres (9,085 sqft) |
| Owner | Company Name on File |
| Tax Bill | $9,543 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-5330-000H-0030 |
| Primary APN | R-16-5330-000H-0030 |
|---|---|
| Alternative APNs |
|
| Full Baths | 4 Baths |
|---|---|
| Stories | 2 Stories |
| Building Area | 2,314 sqft Living Area |
| 1st Floor Area | 1,664 sqft |
| 2nd Floor Area | 650 sqft |
| Flooring | Carpet |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Duplex Single |
| Exterior Material | Stone |
| Roof Type | Gable |
| Lot Area | 9,085 sqft (0.209 acres) |
| Garage Area | 330 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 128 sqft |
| Patio Area | 119 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R165330000H0030 |
|---|---|
| Street Address | 8331 FATHOM CIR |
| City | AUSTIN |
| State | TX |
| Zip | 78750-3105 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | SONESTA WEST SEC 1A, BLOCK H, LOT 30 |
| Legal Subdivision | SONESTA WEST SEC 1A |
| Legal Block | H |
| Legal Lot Number | 30 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 4 |
| Census Block | 4017 |
| Census Tract | 20405 |
8331 Fathom Cir, a duplex, is owned by a company that acquired it in June 2018.
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 | Company Name on File |
|---|---|
| Mailing Address | 9616 CRENATA CV, AUSTIN, TX 78759-6264 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 29, 2018 |
| Deed Sale | Jun 29, 2018 |
| Prior Sale | Apr 19, 2011 |
| Deed Document Number | 201857503 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 8331 Fathom Cir was $9,543, down 9.6% from the year before.
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 | $9,543.00 (-9.65%) | $438,156 Land $98,000 Building $340,156 | $438,156 Land $98,000 Building $340,156 |
| 2024 | $10,562.00 (+1.92%) | ||
| 2023 | $10,363.00 (-9.6%) | $557,837 Land $108,000 Building $449,837 | $557,837 Land $108,000 Building $449,837 |
| 2022 | $11,464.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 8331 Fathom Cir in Zone X, an area of minimal flood risk, though there have been 12 flood claims nearby since 1981.
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 | 4 in force |
| Nearby Flood Claims | 12 (1981–2016) |
| Claims Outside the SFHA | 3 of 12 |
| Most Recent Claim | Jun 2016 · 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.
The area around 8331 Fathom Cir 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 | 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 531 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Google Fiber Fiber | 8,000 / 8,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Western Broadband Fixed Wireless | 200 / 40 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Astound Broadband.
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