Williamson Value

16816 Mouse Trap Dr, Round Rock, TX 78681

2 bathrooms, 2,457 sqft, built 1998, in R224599C - Cat Hollow Sec A Ph 3 Appraised at $623,489 for 2026.

Williamson County account 172518

Appraised value
$623,489
Tax year 2026 · after any cap, before exemptions
Market value
$642,876
Living area
2,457 sqft
$254 per sqft
Year built
1998

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, Cat Hollow Sec A Ph 3, 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 $566,808 in 2025 to $623,489 in 2026.
  • Appraised value per square footThe current public record shows about $254 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $19,387 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the R224599C - Cat Hollow Sec A Ph 3 neighborhood and ZIP 78681.
  • Neighborhood value signalAmong 143 residential records in the same neighborhood, the average appraised value is about $243 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +9.2% 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.

  • 8709 Glen Canyon Dr, Round Rock, TX 78681
    July-17-2026 | 2,498 sqft | $210/sqft | built 1998 | Similar size (2,498 sqft); Similar age (1998); Sold after the valuation date
    $525,000
  • 3843 Derby Trl, Round Rock, TX 78681
    September-25-2026 | 2,552 sqft | $176/sqft | built 2003 | Similar size (2,552 sqft); Moderate age difference (5 years newer); Sold after the valuation date
    $449,900
  • 3817 Newland Dr, Round Rock, TX 78681
    August-11-2026 | 2,563 sqft | $195/sqft | built 1994 | Similar size (2,563 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $499,000
  • 3769 Turetella Dr, Round Rock, TX 78681
    August-18-2026 | 2,581 sqft | $221/sqft | built 2004 | 5% size difference (2,581 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $569,900
  • 3923 Grayling Ln, Round Rock, TX 78681
    July-31-2026 | 2,373 sqft | $252/sqft | built 1992 | Similar size (2,373 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $599,000

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.