Harris Value

21606 Highland Knolls Dr, Katy, TX 77450

1,714 sqft, built 1985, in Memorial Parkway Appraised at $286,849 for 2026.

Harris County account 1137770000025

Appraised value
$286,849
Tax year 2026 · after any cap, before exemptions
Living area
1,714 sqft
$167 per sqft
Year built
1985
Average quality

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 77450, Memorial Parkway, and Katy 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 delivered, 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 HCAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 8.2% from $265,169 in 2025 to $286,849 in 2026.
  • Appraised value per square footThe current public record shows about $167 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Memorial Parkway neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 402 residential records in the same neighborhood, the average appraised value is about $152 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.0% on average.

Comparable assessments

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

  • 1511 Apple Park Dr, Katy, TX 77450
    1,696 sqft | $183/sqft | built 1985 | Similar size (1,696 vs 1,714 sqft); Built same year (1985); Similar lot size (7,590 vs 7,475 sqft)
    $310,489
  • 1423 Park Wind Dr, Katy, TX 77450
    1,696 sqft | $190/sqft | built 1985 | Similar size (1,696 vs 1,714 sqft); Built same year (1985); Similar lot size (7,820 vs 7,475 sqft)
    $322,830
  • 1442 Country Park Dr, Katy, TX 77450
    1,740 sqft | $167/sqft | built 1985 | Similar size (1,740 vs 1,714 sqft); Built same year (1985); Similar lot size (7,475 vs 7,475 sqft)
    $289,756
  • 1506 Apple Park Dr, Katy, TX 77450
    1,696 sqft | $192/sqft | built 1984 | Similar size (1,696 vs 1,714 sqft); Similar age (1984 vs 1985); Similar lot size (7,093 vs 7,475 sqft)
    $325,996
  • 21707 Park Valley Dr, Katy, TX 77450
    1,696 sqft | $174/sqft | built 1984 | Similar size (1,696 vs 1,714 sqft); Similar age (1984 vs 1985); Similar lot size (7,600 vs 7,475 sqft)
    $294,563

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.

  • 21403 Park Bluff Dr, Katy, TX 77450
    August-26-2026 | 1,715 sqft | $174/sqft | built 1978 | Similar size (1,715 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $299,000
  • 22507 Coriander Dr, Katy, TX 77450
    August-26-2026 | 1,732 sqft | $147/sqft | built 1978 | Similar size (1,732 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $254,900
  • 22927 Indian Ridge Dr, Katy, TX 77450
    August-28-2026 | 1,815 sqft | $152/sqft | built 1983 | 6% size difference (1,815 sqft); Similar age (1983); Sold after the valuation date
    $275,000
  • 20218 Pittsford Dr, Katy, TX 77450
    September-1-2026 | 1,656 sqft | $196/sqft | built 1978 | Similar size (1,656 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $325,000
  • 1519 Valley Landing Dr, Katy, TX 77450
    June-30-2026 | 1,766 sqft | $139/sqft | built 1984 | Similar size (1,766 sqft); Similar age (1984); Sold after the valuation date
    $245,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Harris County Appraisal District. Sales data checked in this snapshot: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.