Harris Value

21335 Highland Knolls Dr, Katy, TX 77450

1,938 sqft, built 1984, in Memorial Parkway Appraised at $280,277 for 2026.

Harris County account 1156030460013

Appraised value
$280,277
Tax year 2026 · after any cap, before exemptions
Living area
1,938 sqft
$145 per sqft
Year built
1984
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 2.5% from $287,328 in 2025 to $280,277 in 2026.
  • Appraised value per square footThe current public record shows about $145 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 229 residential records in the same neighborhood, the average appraised value is about $160 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +2.3% on average.

Comparable assessments

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

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.

  • 1307 Grand Junction Dr, Katy, TX 77450
    August-28-2026 | 1,877 sqft | $173/sqft | built 1983 | Similar size (1,877 sqft); Similar age (1983); Sold after the valuation date
    $324,999
  • 21123 Park Villa Dr, Katy, TX 77450
    September-18-2026 | 2,002 sqft | $149/sqft | built 1976 | Similar size (2,002 sqft); Moderate age difference (8 years older); Sold after the valuation date
    $299,000
  • 1014 Long Prairie Dr, Katy, TX 77450
    July-20-2026 | 1,931 sqft | $168/sqft | built 1990 | Similar size (1,931 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $325,000
  • 1211 Lamplight Trail Dr, Katy, TX 77450
    September-10-2026 | 2,039 sqft | $169/sqft | built 1993 | 5% size difference (2,039 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $345,000
  • 22818 Orchard Oak Ln, Katy, TX 77450
    August-18-2026 | 1,987 sqft | $181/sqft | built 1994 | Similar size (1,987 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $360,000

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.