Collin Value

8300 Castine Dr, Mckinney, TX 75071

3,654 sqft, built 2006, in Lacima Manor. Appraised at $874,252 for 2026.

Collin County account 2538780

Likely too high

about $42,000

8 similar homes nearby point to a value about $42,000 lower than yours.

Appraised value$874,252
Similar homes$832,563
$41,689 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Appraised value
$874,252
Tax year 2026
Living area
3,654 sqft
$239 per sqft
Year built
2006
Homestead
Yes
Owner-occupied exemption on file

Why we think so

Unequal assessment

Strong

6 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $227.85/sqft, which supports a value of $832,563.

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 75071, Lacima Manor, and McKinney 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 0.9% from $881,775 in 2025 to $874,252 in 2026.
  • Appraised value per square footThe current public record shows about $239 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lacima Manor neighborhood and ZIP 75071.
  • Neighborhood value signalAmong 347 residential records in the same neighborhood, the average appraised value is about $211 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.1% on average.

Comparable assessments

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

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.

  • 712 Glendevon Dr, Mckinney, TX 75071
    August-17-2026 | 3,882 sqft | $223/sqft | built 2008 | 6% size difference (3,882 sqft); Similar age (2008); Sold after the valuation date
    $865,000
  • 5216 Bear Valley Dr, Mckinney, TX 75071
    June-22-2026 | 3,675 sqft | $190/sqft | built 2009 | Similar size (3,675 sqft); Similar age (2009); Sold after the valuation date
    $699,500
  • 3808 Launch Rd, Mckinney, TX 75071
    September-16-2026 | 3,575 sqft | $248/sqft | built 2026 | Similar size (3,575 sqft); Sold after the valuation date
    $887,322
  • 7601 Darrow Dr, Mckinney, TX 75071
    September-4-2026 | 3,932 sqft | $253/sqft | built 2015 | 8% size difference (3,932 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $995,000
  • 2408 Eisenhower Dr, Mckinney, TX 75071
    August-31-2026 | 3,250 sqft | $134/sqft | built 2002 | 11% size difference (3,250 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $435,000

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 0.9% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$874,252−$7,523−0.9%
2025$881,775−$4,301−0.5%
2024$886,076+$95,747+12.1%
2023$790,329+$53,043+7.2%
2022$737,286+$167,183+29.3%
2021$570,103+$45,639+8.7%
2020$524,464——
6-year total+$349,788+66.7%