Williamson Value

1200 Sonata Pl, Round Rock, TX 78681

4 bed / 3 bath, 3,474 sqft, built 2025, in R294523A-Sauls Ranch East Appraised at $852,725 for 2026.

Williamson County account 475103

Appraised value
$852,725
Tax year 2026 · after any cap, before exemptions
Living area
3,474 sqft
$245 per sqft
Year built
2025

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, R294523A-Sauls Ranch East, 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 changed from $18,900 in 2025 to $852,725 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Appraised value per square footThe current public record shows about $245 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the R294523A-Sauls Ranch East neighborhood and ZIP 78681.
  • Neighborhood value signalAmong 128 residential records in the same neighborhood, the average appraised value is about $265 per square foot.

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 | 10% size difference (3,121 sqft); Moderate age difference (8 years older); Sold after the valuation date
    $656,000
  • 3013 Agave Loop, Round Rock, TX 78681
    September-21-2026 | 3,260 sqft | $191/sqft | built 2012 | 6% size difference (3,260 sqft); Sold after the valuation date; Within 1 bedroom (5 vs 4)
    $624,000
  • 612 Cascada Ln, Round Rock, TX 78681
    August-24-2026 | 3,203 sqft | $240/sqft | built 2014 | 8% size difference (3,203 sqft); Sold after the valuation date; Same beds (4)
    $769,000
  • 700 Whitetail Dr, Round Rock, TX 78681
    July-31-2026 | 3,171 sqft | $213/sqft | built 2019 | 9% size difference (3,171 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $675,000
  • 3821 Lombard St, Round Rock, TX 78681
    September-11-2026 | 2,901 sqft | $221/sqft | built 2019 | Moderate age difference (6 years older); Sold after the valuation date; Same beds (4)
    $639,900

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.