Travis County property record for 5105 Portmarnock Ct, Austin, TX 78747
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 3,192 sqft · built 1998 |
| Lot Size | 0.307 acres (13,412 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $11,053 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0443070401 |
| Primary APN | 0443070401 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 3,192 sqft Living Area |
| Gross Area | 3,675 sqft |
| 1st Floor Area | 3,192 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1998 |
|---|---|
| Construction Type | Wood Frame |
| Foundation Type | Slab (Mat/Raft) |
| Roof Type | Hip |
| Roof Material | Composition Shingle |
| Lot Area | 13,412 sqft (0.307 acres) |
| Garage Type | Attached |
| Garage Area | 483 sqft |
| Parking Spaces | 2 Parking Spaces |
| Pool Type | Pool with Hot Tub/Spa |
| Porch | Open Porch |
| Porch Area | 570 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Account Number | 373910 |
|---|---|
| Old Parcel Number | 04430704010000 |
| Street Address | 5105 PORTMARNOCK CT |
| City | AUSTIN |
| State | TX |
| Zip | 78747-1466 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 16 BLK C ONION CREEK ADDN |
| Legal Subdivision | ONION CREEK ADDN |
| Legal Block | C |
| Legal Lot Number | 16 |
| Jurisdiction | TRAVIS TX |
| Township / Civil Division | AUSTIN |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 2446 |
Source: Travis County records, as of November 3, 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 5105 PORTMARNOCK CT, AUSTIN, TX 78747-1466 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 6, 2002 |
| Deed Sale | Mar 6, 2002 |
| Prior Sale | Mar 16, 1998 |
| Deed Document Number | 2003260099TR |
| Prior Transfer Date | Feb 8, 2001 |
| Prior Transfer Doc | 2001020544 |
| Record Updated | Jun 8, 2026 |
Source: Travis County assessment roll, as of August 1, 2025
| Type | Name |
|---|---|
| State | Texas |
| Municipality | Austin City |
| County | Travis County |
| Unified School District | Austin Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $733,374 (-7.08%) Land $77,259 Building $656,115 | $733,374 (-7.08%) Land $77,259 Building $656,115 | |
| 2024 | $11,053.00 (+15.87%) | ||
| 2023 | $789,216 Land $72,600 Building $716,616 | $789,216 Land $72,600 Building $716,616 | |
| 2022 | $9,539.00 |
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 May 17, 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 |
| Flood Insurance Cost | Premium on Record median of 94 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 106 units insured incl. 12 condo units |
| Nearby Flood Claims | 2 (2015) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Oct 2015 · Severe Storms, Tornadoes, Straight-line Winds, And Flooding |
| Claims by Event |
|
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 66% of the US · lower than 90% of Texas |
|---|---|
| Wildfire Likelihood | 0.05% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 230 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 | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
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