Collin Value

800 Hallmark Ct, Prosper, TX 75078

3,556 sqft, built 2019, in Star Trail Phase One B. Appraised at $1,024,656 for 2026.

Collin County account 2766114

Appraised value
$1,024,656
Tax year 2026
Living area
3,556 sqft
$288 per sqft
Year built
2019
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, Star Trail Phase One B, 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 decreased 0.2% from $1,026,663 in 2025 to $1,024,656 in 2026.
  • Appraised value per square footThe current public record shows about $288 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Star Trail Phase One B neighborhood and ZIP 75078.
  • Neighborhood value signalAmong 422 residential records in the same neighborhood, the average appraised value is about $289 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +3.8% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 2110 Lee Ave, Prosper, TX 75078
    3,542 sqft | $297/sqft | built 2021 | Similar size (3,542 vs 3,556 sqft); Similar age (2021 vs 2019); Similar lot size (10,890 vs 10,915 sqft)
    $1,051,157
  • 2360 White Oak Way, Prosper, TX 75078
    3,569 sqft | $286/sqft | built 2022 | Similar size (3,569 vs 3,556 sqft); Similar age (2022 vs 2019); Similar lot size (10,890 vs 10,915 sqft)
    $1,020,000
  • 2300 White Oak Way, Prosper, TX 75078
    3,580 sqft | $290/sqft | built 2023 | Similar size (3,580 vs 3,556 sqft); Similar age (2023 vs 2019); Similar lot size (10,890 vs 10,915 sqft)
    $1,038,132
  • 1600 Cottonwood Trl, Prosper, TX 75078
    3,600 sqft | $302/sqft | built 2019 | Similar size (3,600 vs 3,556 sqft); Built same year (2019); Similar lot size (11,325 vs 10,915 sqft)
    $1,085,673
  • 1650 Parkwood Dr, Prosper, TX 75078
    3,588 sqft | $302/sqft | built 2020 | Similar size (3,588 vs 3,556 sqft); Similar age (2020 vs 2019); Similar lot size (11,325 vs 10,915 sqft)
    $1,082,000

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.

  • 1600 Cottonwood Trl, Prosper, TX 75078
    August-24-2026 | 3,600 sqft | $290/sqft | built 2019 | Similar size (3,600 sqft); Similar age (2019); Sold after the valuation date
    $1,045,000
  • 500 Lake Trail Ln, Prosper, TX 75078
    September-18-2026 | 3,412 sqft | $227/sqft | built 2017 | Similar size (3,412 sqft); Similar age (2017); Sold after the valuation date
    $775,000
  • 520 Devonshire Dr, Prosper, TX 75078
    September-16-2026 | 3,641 sqft | $206/sqft | built 2010 | Similar size (3,641 sqft); Moderate age difference (9 years older); Sold after the valuation date
    $749,950
  • 361 Frasier Ln, Prosper, TX 75078
    August-3-2026 | 3,486 sqft | $287/sqft | built 2016 | Similar size (3,486 sqft); Similar age (2016); Sold after the valuation date
    $1,000,000
  • 851 White River Dr, Prosper, TX 75078
    September-4-2026 | 3,663 sqft | $191/sqft | built 2010 | Similar size (3,663 sqft); Moderate age difference (9 years older); Sold after the valuation date
    $699,000

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

Down 0.2% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$1,024,656−$2,007−0.2%
2025$1,026,663−$31,441−3.0%
2024$1,058,104+$1,367+0.1%
2023$1,056,737+$228,898+27.7%
2022$827,839+$169,368+25.7%
2021$658,471+$37,825+6.1%
2020$620,646——
6-year total+$404,010+65.1%