Denton Value

3850 Roundtree Dr, Prosper, TX 75078

3,348 sqft, built 2020, in Windsong Ranch Phase 5B Appraised at $818,954 for 2026.

Denton County account 000000773082

Appraised value
$818,954
Tax year 2026 · after any cap, before exemptions
Living area
3,348 sqft
$245 per sqft
Year built
2020
Homestead
Yes
Owner-occupied exemption on file

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 75078 and Windsong Ranch Phase 5B 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 Denton CAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value decreased 7.0% from $880,313 in 2025 to $818,954 in 2026.
  • 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 Windsong Ranch Phase 5B neighborhood and ZIP 75078.
  • Neighborhood value signalAmong 72 residential records in the same neighborhood, the average appraised value is about $261 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +3.5% on average.

Comparable assessments

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

  • 3780 Newburn St, Prosper, TX 75078
    3,348 sqft | $250/sqft | built 2020 | Similar size (3,348 vs 3,348 sqft); Built same year (2020); Similar lot size (8,668 vs 8,276 sqft)
    $838,670
  • 3841 Newburn, Prosper, TX 75078
    3,300 sqft | $244/sqft | built 2020 | Similar size (3,300 vs 3,348 sqft); Built same year (2020); Similar lot size (8,015 vs 8,276 sqft)
    $804,493
  • 3791 Freeman Way, Prosper, TX 75078
    3,318 sqft | $253/sqft | built 2021 | Similar size (3,318 vs 3,348 sqft); Similar age (2021 vs 2020); Similar lot size (8,015 vs 8,276 sqft)
    $838,524
  • 3820 Newburn St, Prosper, TX 75078
    3,400 sqft | $242/sqft | built 2020 | Similar size (3,400 vs 3,348 sqft); Built same year (2020); Similar lot size (8,015 vs 8,276 sqft)
    $821,707
  • 210 Valley Mills, Prosper, TX 75078
    3,443 sqft | $253/sqft | built 2021 | Similar size (3,443 vs 3,348 sqft); Similar age (2021 vs 2020); Similar lot size (8,319 vs 8,276 sqft)
    $869,881

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.

  • 781 Elm Park Dr, Prosper, TX 75078
    September-1-2026 | 3,389 sqft | $204/sqft | built 2020 | Similar size (3,389 sqft); Similar age (2020); Sold after the valuation date
    $690,000
  • 4710 Crossvine Dr, Prosper, TX 75078
    September-30-2026 | 3,190 sqft | $207/sqft | built 2014 | Similar size (3,190 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $659,000
  • 3830 Newburn St, Prosper, TX 75078
    June-22-2026 | 3,426 sqft | $263/sqft | built 2020 | Similar size (3,426 sqft); Similar age (2020); Sold after the valuation date
    $900,000
  • 4141 Dewberry Ln, Prosper, TX 75078
    June-16-2026 | 3,374 sqft | $231/sqft | built 2017 | Similar size (3,374 sqft); Similar age (2017); Sold after the valuation date
    $780,000
  • 740 Mountain Laurel Dr, Prosper, TX 75078
    July-20-2026 | 3,519 sqft | $227/sqft | built 2018 | 5% size difference (3,519 sqft); Similar age (2018); Sold after the valuation date
    $799,900

Public appraisal comparison for 2026. Prepared . Appraisal source: Denton 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.