Williamson Value

3905 Stanyan Dr, Round Rock, TX 78681

4 bed / 3 bath, 3,263 sqft, built 2018, in G799514C - Mayfield Ranch Appraised at $590,547 for 2026.

Williamson County account 392195

Appraised value
$590,547
Tax year 2026 · after any cap, before exemptions
Living area
3,263 sqft
$181 per sqft
Year built
2018

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 78681, Mayfield Ranch, 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 decreased 10.1% from $656,813 in 2025 to $590,547 in 2026.
  • Appraised value per square footThe current public record shows about $181 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the G799514C - Mayfield Ranch neighborhood and ZIP 78681.
  • Neighborhood value signalAmong 1,092 residential records in the same neighborhood, the average appraised value is about $204 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -8.5% 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.

  • 4105 Haight St, Round Rock, TX 78681
    September-4-2026 | 3,121 sqft | $210/sqft | built 2017 | Similar size (3,121 sqft); Similar age (2017); Sold after the valuation date
    $656,000
  • 3013 Agave Loop, Round Rock, TX 78681
    September-21-2026 | 3,260 sqft | $191/sqft | built 2012 | Similar size (3,260 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $624,000
  • 612 Cascada Ln, Round Rock, TX 78681
    August-24-2026 | 3,203 sqft | $240/sqft | built 2014 | Similar size (3,203 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $769,000
  • 700 Whitetail Dr, Round Rock, TX 78681
    July-31-2026 | 3,171 sqft | $213/sqft | built 2019 | Similar size (3,171 sqft); Similar age (2019); Sold after the valuation date
    $675,000
  • 2705 Wolkin Cv, Round Rock, TX 78681
    September-16-2026 | 3,300 sqft | $232/sqft | built 2000 | Similar size (3,300 sqft); Sold after the valuation date; Same beds (4)
    $765,000

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.