Williamson Value

605 Main Ave E, Round Rock, TX 78664

3 bathrooms, 2,512 sqft, built 1991, in R701575F - Old Town Round Rock Appraised at $737,865 for 2026.

Williamson County account 126642

Appraised value
$737,865
Tax year 2026 · after any cap, before exemptions
Market value
$755,137
Living area
2,512 sqft
$294 per sqft
Year built
1991

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 78664, Old Town Round Rock, 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 $670,786 in 2025 to $737,865 in 2026.
  • Appraised value per square footThe current public record shows about $294 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $17,272 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the R701575F - Old Town Round Rock neighborhood and ZIP 78664.
  • Neighborhood value signalAmong 339 residential records in the same neighborhood, the average appraised value is about $242 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +10.1% on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

  • 1600 Old Settlement Rd, Round Rock, TX 78664
    2,553 sqft | $350/sqft | built 1993 | Similar size (2,553 vs 2,512 sqft); Similar age (1993 vs 1991); Same neighborhood
    $894,459
  • 1600 Old Settlement Rd, Round Rock, TX 78664
    2,553 sqft | $350/sqft | built 1993 | Similar size (2,553 vs 2,512 sqft); Similar age (1993 vs 1991); Same neighborhood
    $894,459
  • 1601 Old Settlement Rd, Round Rock, TX 78664
    2,318 sqft | $226/sqft | built 1984 | 8% smaller (2,318 vs 2,512 sqft); Same neighborhood
    $523,994
  • 701 Wonder Dr, Round Rock, TX 78681
    2,406 sqft | $201/sqft | built 1984 | Similar size (2,406 vs 2,512 sqft); Same neighborhood
    $482,489
  • 1600 Old Settlement Rd, Round Rock, TX 78664
    2,553 sqft | $295/sqft | built 1993 | Similar size (2,553 vs 2,512 sqft); Similar age (1993 vs 1991); Same neighborhood
    $752,029

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.

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.