Harris Value

21642 Highland Knolls Dr, Katy, TX 77450

2,412 sqft, built 1988, in Memorial Parkway Appraised at $301,859 for 2026.

Harris County account 1137820000024

Appraised value
$301,859
Tax year 2026 · after any cap, before exemptions
Living area
2,412 sqft
$125 per sqft
Year built
1988
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 decreased 2.9% from $311,005 in 2025 to $301,859 in 2026.
  • Appraised value per square footThe current public record shows about $125 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.

  • 21666 Highland Knolls Dr, Katy, TX 77450
    2,409 sqft | $131/sqft | built 1993 | Similar size (2,409 vs 2,412 sqft); Similar age (1993 vs 1988); Similar lot size (8,050 vs 8,050 sqft)
    $316,605
  • 21639 Park Bend Dr, Katy, TX 77450
    2,428 sqft | $121/sqft | built 1983 | Similar size (2,428 vs 2,412 sqft); Similar age (1983 vs 1988); Similar lot size (8,005 vs 8,050 sqft)
    $293,902
  • 21622 Park Brook Dr, Katy, TX 77450
    2,456 sqft | $126/sqft | built 1983 | Similar size (2,456 vs 2,412 sqft); Similar age (1983 vs 1988); Similar lot size (8,004 vs 8,050 sqft)
    $308,982
  • 21662 Park York Dr, Katy, TX 77450
    2,463 sqft | $123/sqft | built 1983 | Similar size (2,463 vs 2,412 sqft); Similar age (1983 vs 1988); Similar lot size (8,004 vs 8,050 sqft)
    $302,937
  • 21638 Park Brook Dr, Katy, TX 77450
    2,456 sqft | $132/sqft | built 1983 | Similar size (2,456 vs 2,412 sqft); Similar age (1983 vs 1988); Similar lot size (7,956 vs 8,050 sqft)
    $325,205

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.

  • 20518 Hampshire Rocks Dr, Katy, TX 77450
    August-28-2026 | 2,282 sqft | $180/sqft | built 1990 | 5% size difference (2,282 sqft); Similar age (1990); Sold after the valuation date
    $409,900
  • 1330 Sherfield Ridge Dr, Katy, TX 77450
    June-30-2026 | 2,499 sqft | $177/sqft | built 1991 | Similar size (2,499 sqft); Similar age (1991); Sold after the valuation date
    $442,000
  • 20723 Vanderwick Dr, Katy, TX 77450
    August-26-2026 | 2,586 sqft | $168/sqft | built 1982 | 7% size difference (2,586 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $435,000
  • 815 Sierra Lake Dr, Katy, TX 77450
    June-29-2026 | 2,376 sqft | $152/sqft | built 1990 | Similar size (2,376 sqft); Similar age (1990); Sold after the valuation date
    $360,000
  • 23010 Lanham Dr, Katy, TX 77450
    June-15-2026 | 2,360 sqft | $135/sqft | built 1989 | Similar size (2,360 sqft); Similar age (1989); Sold after the valuation date
    $319,500

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.