Harris Value

20438 Knolls Spring Trl, Katy, TX 77450

2,862 sqft, built 1997, in Highland Trails Appraised at $410,782 for 2026.

Harris County account 1187190010010

Appraised value
$410,782
Tax year 2026 · after any cap, before exemptions
Living area
2,862 sqft
$144 per sqft
Year built
1997
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, Highland Trails, 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 3.8% from $395,733 in 2025 to $410,782 in 2026.
  • Appraised value per square footThe current public record shows about $144 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Highland Trails neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 212 residential records in the same neighborhood, the average appraised value is about $153 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +3.0% on average.

Comparable assessments

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

  • 2107 Scenic Hollow Ct, Katy, TX 77450
    2,958 sqft | $153/sqft | built 1998 | Similar size (2,958 vs 2,862 sqft); Similar age (1998 vs 1997); Similar lot size (8,926 vs 9,020 sqft)
    $453,284
  • 20303 Longspring Dr, Katy, TX 77450
    2,710 sqft | $146/sqft | built 1996 | 5% smaller (2,710 vs 2,862 sqft); Similar age (1996 vs 1997); Similar lot size (9,519 vs 9,020 sqft)
    $395,690
  • 2103 Scenic Hollow Ct, Katy, TX 77450
    2,940 sqft | $146/sqft | built 1999 | Similar size (2,940 vs 2,862 sqft); Similar age (1999 vs 1997); Similar lot size (9,813 vs 9,020 sqft)
    $428,126
  • 2150 Scenic Hollow Ct, Katy, TX 77450
    2,689 sqft | $146/sqft | built 1995 | 6% smaller (2,689 vs 2,862 sqft); Similar age (1995 vs 1997); Similar lot size (8,182 vs 9,020 sqft)
    $392,388
  • 20431 Longspring Dr, Katy, TX 77450
    2,710 sqft | $140/sqft | built 1996 | 5% smaller (2,710 vs 2,862 sqft); Similar age (1996 vs 1997); Lot 14% smaller (7,752 vs 9,020 sqft)
    $378,188

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.

  • 310 Gatemere Ct, Katy, TX 77450
    August-7-2026 | 2,779 sqft | $140/sqft | built 1993 | Similar size (2,779 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $388,500
  • 23027 Red River Dr, Katy, TX 77450
    August-31-2026 | 3,005 sqft | $133/sqft | built 1989 | Similar size (3,005 sqft); Moderate age difference (8 years older); Sold after the valuation date
    $400,000
  • 2023 Stanford Park Ct, Katy, TX 77450
    August-28-2026 | 2,608 sqft | $142/sqft | built 2000 | 9% size difference (2,608 sqft); Similar age (2000); Sold after the valuation date
    $369,900
  • 20511 Shadow Mill Ct, Katy, TX 77450
    May-11-2026 | 2,856 sqft | $165/sqft | built 1996 | Similar size (2,856 sqft); Similar age (1996); Sold after the valuation date
    $470,000
  • 20911 Park Brush Cir, Katy, TX 77450
    September-17-2026 | 2,890 sqft | $119/sqft | built 1977 | Similar size (2,890 sqft); Sold after the valuation date
    $345,000

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.