Williamson Value

3629 Aquamarine Dr, Round Rock, TX 78681

3 bathrooms, 4,062 sqft, built 2008, in R147606C - Walsh Ranch Appraised at $1,052,311 for 2026.

Williamson County account 281835

Appraised value
$1,052,311
Tax year 2026 · after any cap, before exemptions
Market value
$1,076,897
Living area
4,062 sqft
$259 per sqft
Year built
2008

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, Walsh 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 increased 10.0% from $956,646 in 2025 to $1,052,311 in 2026.
  • Appraised value per square footThe current public record shows about $259 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $24,586 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the R147606C - Walsh Ranch neighborhood and ZIP 78681.
  • Neighborhood value signalAmong 238 residential records in the same neighborhood, the average appraised value is about $248 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +6.3% 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.

  • 3201 Napali Ct, Round Rock, TX 78681
    August-6-2026 | 4,187 sqft | $227/sqft | built 2009 | Similar size (4,187 sqft); Similar age (2009); Sold after the valuation date
    $950,000
  • 1137 Waimea Bnd, Round Rock, TX 78681
    June-30-2026 | 4,077 sqft | $196/sqft | built 2008 | Similar size (4,077 sqft); Similar age (2008); Sold after the valuation date
    $799,900
  • 2628 Dalea St, Round Rock, TX 78681
    September-15-2026 | 3,765 sqft | $219/sqft | built 2012 | 7% size difference (3,765 sqft); Moderate age difference (4 years newer); Sold after the valuation date
    $825,000
  • 3000 Covington Pl, Round Rock, TX 78681
    June-24-2026 | 4,121 sqft | $231/sqft | built 2004 | Similar size (4,121 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $950,000
  • 2502 Echo Wood Pl, Round Rock, TX 78681
    July-21-2026 | 3,843 sqft | $247/sqft | built 2005 | 5% size difference (3,843 sqft); Similar age (2005); Sold after the valuation date
    $950,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Williamson Central Appraisal District. Sales data checked in this snapshot: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.