Collin Value

841 Koby Cir, Prosper, TX 75078

4,608 sqft, built 2022, in Star Trail Phase One B. Appraised at $1,323,000 for 2026.

Collin County account 2766078

Appraised value
$1,323,000
Tax year 2026
Living area
4,608 sqft
$287 per sqft
Year built
2022
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 increased 8.6% from $1,218,000 in 2025 to $1,323,000 in 2026.
  • Appraised value per square footThe current public record shows about $287 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

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

  • 140 Crestover Ct, Prosper, TX 75078
    4,660 sqft | $260/sqft | built 2022 | Similar size (4,660 vs 4,608 sqft); Built same year (2022); Similar lot size (13,939 vs 14,085 sqft)
    $1,213,360
  • 2201 Bryn Mawr Dr, Prosper, TX 75078
    4,540 sqft | $287/sqft | built 2021 | Similar size (4,540 vs 4,608 sqft); Similar age (2021 vs 2022); Similar lot size (13,503 vs 14,085 sqft)
    $1,301,651
  • 2160 White Oak Way, Prosper, TX 75078
    4,493 sqft | $283/sqft | built 2023 | Similar size (4,493 vs 4,608 sqft); Similar age (2023 vs 2022); Similar lot size (13,503 vs 14,085 sqft)
    $1,271,967
  • 680 Hallmark Ct, Prosper, TX 75078
    4,462 sqft | $269/sqft | built 2022 | Similar size (4,462 vs 4,608 sqft); Built same year (2022); Similar lot size (13,459 vs 14,085 sqft)
    $1,200,776
  • 1820 Lexington Ave, Prosper, TX 75078
    4,430 sqft | $270/sqft | built 2018 | Similar size (4,430 vs 4,608 sqft); Similar age (2018 vs 2022); Similar lot size (14,075 vs 14,085 sqft)
    $1,195,000

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 Wichita Dr, Prosper, TX 75078
    October-1-2026 | 4,637 sqft | $216/sqft | built 2018 | Similar size (4,637 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $1,000,000
  • 1530 Clipston Dr, Prosper, TX 75078
    July-30-2026 | 4,529 sqft | $197/sqft | built 2023 | Similar size (4,529 sqft); Similar age (2023); Sold after the valuation date
    $890,000
  • 1921 Wynne Ave, Prosper, TX 75078
    September-21-2026 | 4,680 sqft | $230/sqft | built 2023 | Similar size (4,680 sqft); Similar age (2023); Sold after the valuation date
    $1,075,000
  • 600 St Andrew Ln, Prosper, TX 75078
    June-15-2026 | 4,555 sqft | $216/sqft | built 2022 | Similar size (4,555 sqft); Similar age (2022); Sold after the valuation date
    $985,000
  • 1640 Stillhouse Hollow Dr, Prosper, TX 75078
    July-24-2026 | 4,472 sqft | $240/sqft | built 2014 | Similar size (4,472 sqft); Moderate age difference (8 years older); Sold after the valuation date
    $1,075,000

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

Up 8.6% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$1,323,000+$105,000+8.6%
2025$1,218,000−$128,594−9.5%
2024$1,346,594+$1,217,894+946.3%
2020$128,700——
6-year total+$1,194,300+928.0%