Collin Value

19b Grindstone Dr, Prosper, TX 75078

2,145 sqft, built 1985, in Collin Green. Appraised at $682,401 for 2026.

Collin County account 1652116

Appraised value
$682,401
Tax year 2026
Living area
2,145 sqft
$318 per sqft
Year built
1985
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, Collin Green, Celina, and Prosper 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 CCAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 13.5% from $601,347 in 2025 to $682,401 in 2026.
  • Appraised value per square footThe current public record shows about $318 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Collin Green neighborhood and ZIP 75078.
  • Neighborhood value signalAmong 122 residential records in the same neighborhood, the average appraised value is about $318 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +8.7% on average.

Comparable assessments

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

  • 9a Rhea Mills Cir, Prosper, TX 75078
    2,187 sqft | $272/sqft | built 1985 | Similar size (2,187 vs 2,145 sqft); Built same year (1985); Similar lot size (43,560 vs 45,093 sqft)
    $595,739
  • 104 Collin Ct, Prosper, TX 75078
    2,181 sqft | $289/sqft | built 1987 | Similar size (2,181 vs 2,145 sqft); Similar age (1987 vs 1985); Similar lot size (43,952 vs 45,093 sqft)
    $629,763
  • 13b Rhea Mills Cir, Prosper, TX 75078
    2,196 sqft | $286/sqft | built 1985 | Similar size (2,196 vs 2,145 sqft); Built same year (1985); Similar lot size (43,564 vs 45,093 sqft)
    $627,261
  • 21a Rhea Mills Cir, Prosper, TX 75078
    2,035 sqft | $312/sqft | built 1985 | 5% smaller (2,035 vs 2,145 sqft); Built same year (1985); Similar lot size (45,045 vs 45,093 sqft)
    $634,344
  • 4c Rhea Mills Cir, Prosper, TX 75078
    2,173 sqft | $333/sqft | built 1986 | Similar size (2,173 vs 2,145 sqft); Similar age (1986 vs 1985); Similar lot size (44,889 vs 45,093 sqft)
    $723,996

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: Collin Central Appraisal District. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 13.5% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$682,401+$81,054+13.5%
2025$601,347−$4,484−0.7%
2024$605,831−$16,648−2.7%
2023$622,479+$124,778+25.1%
2022$497,701+$115,678+30.3%
2021$382,023+$33,803+9.7%
2020$348,220——
6-year total+$334,181+96.0%