Travis Value

5109 Portmarnock Ct, Austin, TX 78747

2 bathrooms, 2,417 sqft, built 1999 Appraised at $595,499 for 2026.

Travis County account 000000373911

Appraised value
$595,499
Tax year 2026 · after any cap, before exemptions
Market value
$610,704
Living area
2,417 sqft
$246 per sqft
Year built
1999
Homestead
Yes
Owner-occupied exemption on file

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 78747 and TCAD Appraisal Area H1480 assessment pages.

Protest deadline

The 2026 protest deadline was . The 2027 protest deadline is . 2027 notices usually arrive in April.

Deadline rule: May 15, or 30 days after your notice of appraised value is mailed, whichever is later. A deadline on a weekend or holiday moves to the next business day. Evidence is reviewed by the Appraisal Review Board (ARB). Dates checked against the official source.

Assessment snapshot

These public TCAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 1.1% from $589,276 in 2025 to $595,499 in 2026.
  • Appraised value per square footThe current public record shows about $246 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $15,205 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for ZIP 78747.
  • Neighborhood value signalAmong 253 residential records in the same neighborhood, the average appraised value is about $220 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -5.8% on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

  • 10918 Olympia Fields Loop, TX 78747
    2,417 sqft | $222/sqft | built 1997 | Similar size (2,417 vs 2,417 sqft); Similar age (1997 vs 1999); Similar lot size (11,016 vs 11,656 sqft)
    $537,456
  • 11304 County Down Dr, TX 78747
    2,417 sqft | $251/sqft | built 2001 | Similar size (2,417 vs 2,417 sqft); Similar age (2001 vs 1999); Similar lot size (10,959 vs 11,656 sqft)
    $607,226
  • 10910 Ballybunion Pl, Austin, TX 78747
    2,327 sqft | $230/sqft | built 1999 | Similar size (2,327 vs 2,417 sqft); Built same year (1999); Similar lot size (11,983 vs 11,656 sqft)
    $534,865
  • 11308 County Down Dr, TX 78747
    2,397 sqft | $249/sqft | built 1999 | Similar size (2,397 vs 2,417 sqft); Built same year (1999); Similar lot size (12,654 vs 11,656 sqft)
    $595,800
  • 11005 River Plantation Dr, Austin, TX 78747
    2,479 sqft | $255/sqft | built 2000 | Similar size (2,479 vs 2,417 sqft); Similar age (2000 vs 1999); Similar lot size (10,977 vs 11,656 sqft)
    $633,257

Recent comparable sales

Sales selected by similarity to the subject property. Texas is a non-disclosure state, so these MLS-listed sales are supplemental evidence.

Public appraisal comparison for 2026. Prepared . Appraisal source: Travis Central Appraisal District. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.