Williamson Value

6653 Casiano Cv, Round Rock, TX 78665

5 bed / 3 bath, 3,523 sqft, built 2018, in H123414C - Siena Limmer Loop Appraised at $532,564 for 2026.

Williamson County account 390839

Appraised value
$532,564
Tax year 2026 · after any cap, before exemptions
Living area
3,523 sqft
$151 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 78665, Siena Limmer Loop, 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 2.6% from $546,769 in 2025 to $532,564 in 2026.
  • Appraised value per square footThe current public record shows about $151 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the H123414C - Siena Limmer Loop neighborhood and ZIP 78665.
  • Neighborhood value signalAmong 1,145 residential records in the same neighborhood, the average appraised value is about $186 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.1% 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.

  • 6904 Etna Way, Round Rock, TX 78665
    September-16-2026 | 3,522 sqft | $159/sqft | built 2014 | Similar size (3,522 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $560,000
  • 3521 Ponce De Leon Pass, Round Rock, TX 78665
    July-14-2026 | 3,416 sqft | $198/sqft | built 2019 | Similar size (3,416 sqft); Similar age (2019); Sold after the valuation date
    $674,900
  • 8093 Arezzo Dr, Round Rock, TX 78665
    September-10-2026 | 3,717 sqft | $138/sqft | built 2017 | 6% size difference (3,717 sqft); Similar age (2017); Sold after the valuation date
    $512,000
  • 5861 Bianca Dr, Round Rock, TX 78665
    September-18-2026 | 3,237 sqft | $150/sqft | built 2020 | 8% size difference (3,237 sqft); Similar age (2020); Sold after the valuation date
    $484,900
  • 8109 Porto Cv, Round Rock, TX 78665
    September-30-2026 | 3,920 sqft | $156/sqft | built 2024 | 11% size difference (3,920 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $610,950

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.