Collin Value

309 Brook Ln, Mckinney, TX 75069

3,980 sqft, built 1975, in Black & Smith Addition. Appraised at $679,179 for 2026.

Collin County account 1092588

Appraised value
$679,179
Tax year 2026
Living area
3,980 sqft
$171 per sqft
Year built
1975

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 75069, Black & Smith Addition, McKinney, and Fairview 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 4.1% from $707,986 in 2025 to $679,179 in 2026.
  • Appraised value per square footThe current public record shows about $171 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Black & Smith Addition neighborhood and ZIP 75069.
  • Neighborhood value signalAmong 1,765 residential records in the same neighborhood, the average appraised value is about $238 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.7% on average.

Comparable assessments

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

  • 308 Brook Ln, Mckinney, TX 75069
    3,932 sqft | $201/sqft | built 1961 | Similar size (3,932 vs 3,980 sqft); Lot 15% larger (16,785 vs 14,583 sqft); Same neighborhood
    $791,423
  • 311 Brook Ln, Mckinney, TX 75069
    3,164 sqft | $170/sqft | built 1975 | Built same year (1975); Similar lot size (14,742 vs 14,583 sqft); Same neighborhood
    $538,567
  • 1 Roberts Ave, Mckinney, TX 75069
    3,493 sqft | $196/sqft | built 1973 | 12% smaller (3,493 vs 3,980 sqft); Similar age (1973 vs 1975); Lot 13% smaller (12,746 vs 14,583 sqft)
    $683,562
  • 314 Brook Ln, Mckinney, TX 75069
    3,836 sqft | $185/sqft | built 1965 | Similar size (3,836 vs 3,980 sqft); Lot 14% larger (16,557 vs 14,583 sqft); Same neighborhood
    $711,313
  • 408 Brook Ln, Mckinney, TX 75069
    3,940 sqft | $173/sqft | built 1968 | Similar size (3,940 vs 3,980 sqft); Same neighborhood
    $680,968

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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 4.1% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$679,179−$28,807−4.1%
2025$707,986−$551−0.1%
2024$708,537+$44,493+6.7%
2023$664,044+$64,652+10.8%
2022$599,392+$137,723+29.8%
2021$461,669−$17,314−3.6%
2020$478,983——
6-year total+$200,196+41.8%