Williamson County property record for 9909 Mariah Cv, Austin, TX 78717
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 3,656 sqft · built 1997 |
| Lot Size | 0.257 acres (11,206 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $11,276 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-3659-000C-0002 |
| Primary APN | R-16-3659-000C-0002 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 3,656 sqft Living Area |
| 1st Floor Area | 2,309 sqft |
| 2nd Floor Area | 1,347 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1997 |
|---|---|
| Effective Year Built | Effective 1998 |
| Exterior Material | Brick Veneer |
| Foundation Type | Slab (Mat/Raft) |
| Roof Type | Hip |
| Lot Area | 11,206 sqft |
| Garage Area | 698 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 220 sqft |
| Patio Area | 100 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R337706 |
|---|---|
| Street Address | 9909 MARIAH CV |
| City | AUSTIN |
| State | TX |
| Zip | 78717-4518 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S5837 - DAVIS SPRING SEC 5-A, BLOCK C, LOT 2 |
| Legal Subdivision | DAVIS SPRING |
| Legal Block | C |
| Legal Lot Number | 2 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | ROUND ROCK-GEORGETOWN |
| Census Block Group | 2 |
| Census Block | 2011 |
| Census Tract | 20516 |
Source: Williamson County assessment roll, as of August 1, 2025
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| Owner of Record | Individual Name on File |
|---|---|
| Co-owner | Verified Secondary Owner |
| Mailing Address | 9909 MARIAH CV, AUSTIN, TX 78717-4518 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 25, 2013 |
| Deed Sale | Mar 25, 2013 |
| Deed Document Number | 2013025998 |
| Record Updated | Jun 8, 2026 |
Source: Williamson County assessment roll, as of August 1, 2025
| 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 | $11,276.00 (+8.98%) Homeowner's exemption | $762,149 (+12.39%) Land $138,000 Building $624,149 | $762,149 (+12.39%) Land $138,000 Building $624,149 |
| 2023 | $10,347.00 (-3.26%) Homeowner's exemption Additional exemption filed | $678,107 Land $160,000 Building $518,107 | $678,107 Land $160,000 Building $518,107 |
| 2022 | $10,696.00 |
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 555 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Google Fiber Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, VTX Communications, Western Broadband.
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