Williamson Value

12 Valley Trl, Round Rock, TX 78664

2 bathrooms, 1,859 sqft, built 1977, in R575583D - Rr Rual Sub 122 & Gattis School Rd Area Appraised at $718,079 for 2026.

Williamson County account 132859

Appraised value
$718,079
Tax year 2026 · after any cap, before exemptions
Market value
$755,622
Living area
1,859 sqft
$386 per sqft
Year built
1977

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 78664, Rr Rual Sub 122 & Gattis School Rd Area, and Round Rock 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 WCAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 10.0% from $652,799 in 2025 to $718,079 in 2026.
  • Appraised value per square footThe current public record shows about $386 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $37,543 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the R575583D - Rr Rual Sub 122 & Gattis School Rd Area neighborhood and ZIP 78664.
  • Neighborhood value signalAmong 191 residential records in the same neighborhood, the average appraised value is about $294 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +6.9% on average.

Comparable assessments

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

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.

  • 526 Dennis Dr, Round Rock, TX 78664
    June-29-2026 | 1,688 sqft | $175/sqft | built 1976 | 9% size difference (1,688 sqft); Similar age (1976); Sold after the valuation date
    $295,000
  • 304 White Wing Way, Round Rock, TX 78664
    August-26-2026 | 2,016 sqft | $176/sqft | built 1977 | 8% size difference (2,016 sqft); Similar age (1977); Sold after the valuation date
    $355,000
  • 300 Pecan Ln, Round Rock, TX 78664
    July-20-2026 | 1,832 sqft | $172/sqft | built 1985 | Similar size (1,832 sqft); Moderate age difference (8 years newer); Sold after the valuation date
    $315,000
  • 902 Ray Berglund Blvd, Round Rock, TX 78664
    August-21-2026 | 1,931 sqft | $378/sqft | built 1987 | Similar size (1,931 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $730,000
  • 2103 Lancaster Gate Cv, Round Rock, TX 78664
    September-23-2026 | 1,748 sqft | $123/sqft | built 1986 | 6% size difference (1,748 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $215,000

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