Collin Value

1820 Cornet Ct, Prosper, TX 75078

5,834 sqft, built 2018, in Christie Farms Phase 1. Appraised at $2,397,722 for 2026.

Collin County account 2747814

Appraised value
$2,397,722
Tax year 2026
Living area
5,834 sqft
$411 per sqft
Year built
2018
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, Christie Farms Phase 1, 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 8.6% from $2,622,191 in 2025 to $2,397,722 in 2026.
  • Appraised value per square footThe current public record shows about $411 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Christie Farms Phase 1 neighborhood and ZIP 75078.
  • Neighborhood value signalAmong 43 residential records in the same neighborhood, the average appraised value is about $419 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -7.3% on average.

Comparable assessments

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

  • 4200 San Juan Ave, Prosper, TX 75078
    5,874 sqft | $401/sqft | built 2016 | Similar size (5,874 vs 5,834 sqft); Similar age (2016 vs 2018); Similar lot size (53,796 vs 50,154 sqft)
    $2,357,611
  • 1840 Tranquility Ct, Prosper, TX 75078
    5,738 sqft | $424/sqft | built 2017 | Similar size (5,738 vs 5,834 sqft); Similar age (2017 vs 2018); Similar lot size (45,912 vs 50,154 sqft)
    $2,434,533
  • 1740 Cornet Ct, Prosper, TX 75078
    6,179 sqft | $383/sqft | built 2018 | 6% larger (6,179 vs 5,834 sqft); Built same year (2018); Similar lot size (48,330 vs 50,154 sqft)
    $2,369,000
  • 4121 Tranquility Ln, Prosper, TX 75078
    5,998 sqft | $387/sqft | built 2019 | Similar size (5,998 vs 5,834 sqft); Similar age (2019 vs 2018); Similar lot size (46,086 vs 50,154 sqft)
    $2,323,000
  • 1700 Aspen St, Prosper, TX 75078
    5,694 sqft | $390/sqft | built 2017 | Similar size (5,694 vs 5,834 sqft); Similar age (2017 vs 2018); Lot 13% smaller (43,560 vs 50,154 sqft)
    $2,218,446

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.

  • 4241 Tranquility Ln, Prosper, TX 75078
    July-14-2026 | 5,392 sqft | $370/sqft | built 2015 | 8% size difference (5,392 sqft); Similar age (2015); Sold after the valuation date
    $1,995,000
  • 1701 Dartmouth Cir, Prosper, TX 75078
    July-1-2026 | 5,689 sqft | $316/sqft | built 2018 | Similar size (5,689 sqft); Similar age (2018); Sold after the valuation date
    $1,795,000
  • 4240 San Juan Ave, Prosper, TX 75078
    July-30-2026 | 5,015 sqft | $369/sqft | built 2015 | 14% size difference (5,015 sqft); Similar age (2015); Sold after the valuation date
    $1,850,000
  • 750 Essex Dr, Prosper, TX 75078
    August-14-2026 | 5,385 sqft | $214/sqft | built 2012 | 8% size difference (5,385 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $1,150,000
  • 1481 Stony Trl, Prosper, TX 75078
    September-16-2026 | 4,808 sqft | $333/sqft | built 2016 | Similar age (2016); Sold after the valuation date
    $1,599,000

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 8.6% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$2,397,722−$224,469−8.6%
2025$2,622,191+$816,235+45.2%
2024$1,805,956−$131,044−6.8%
2023$1,937,000+$112,383+6.2%
2022$1,824,617+$435,617+31.4%
2021$1,389,000+$89,000+6.8%
2020$1,300,000——
6-year total+$1,097,722+84.4%