Harris Value

20434 Knolls Spring Trl, Katy, TX 77450

2,839 sqft, built 1998, in Highland Trails Appraised at $399,774 for 2026.

Harris County account 1187190010009

Appraised value
$399,774
Tax year 2026 · after any cap, before exemptions
Living area
2,839 sqft
$141 per sqft
Year built
1998
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 decreased 1.5% from $405,731 in 2025 to $399,774 in 2026.
  • Appraised value per square footThe current public record shows about $141 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.

  • 2014 Highland Bay Ct, Katy, TX 77450
    2,847 sqft | $144/sqft | built 1999 | Similar size (2,847 vs 2,839 sqft); Similar age (1999 vs 1998); Similar lot size (6,050 vs 6,085 sqft)
    $409,361
  • 20427 Longspring Dr, Katy, TX 77450
    2,841 sqft | $139/sqft | built 1998 | Similar size (2,841 vs 2,839 sqft); Built same year (1998); Similar lot size (5,962 vs 6,085 sqft)
    $396,000
  • 2107 Mossy Trail Dr, Katy, TX 77450
    2,809 sqft | $155/sqft | built 1998 | Similar size (2,809 vs 2,839 sqft); Built same year (1998); Similar lot size (6,050 vs 6,085 sqft)
    $435,201
  • 2139 Mossy Trail Dr, Katy, TX 77450
    2,857 sqft | $141/sqft | built 1997 | Similar size (2,857 vs 2,839 sqft); Similar age (1997 vs 1998); Similar lot size (6,050 vs 6,085 sqft)
    $401,846
  • 2027 Autumn Fern Dr, Katy, TX 77450
    2,858 sqft | $144/sqft | built 1999 | Similar size (2,858 vs 2,839 sqft); Similar age (1999 vs 1998); Similar lot size (6,050 vs 6,085 sqft)
    $411,882

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.

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.