Harris Value

20518 Shadow Mill Ct, Katy, TX 77450

3,328 sqft, built 1996, in Kelliwood Place Appraised at $490,655 for 2026.

Harris County account 1172640030048

Appraised value
$490,655
Tax year 2026 · after any cap, before exemptions
Living area
3,328 sqft
$147 per sqft
Year built
1996
Good 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, Kelliwood Place, 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 8.0% from $454,417 in 2025 to $490,655 in 2026.
  • Appraised value per square footThe current public record shows about $147 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Kelliwood Place neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 218 residential records in the same neighborhood, the average appraised value is about $158 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +6.8% on average.

Comparable assessments

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

  • 20410 Chelsea Park Ct, Katy, TX 77450
    3,311 sqft | $152/sqft | built 1998 | Similar size (3,311 vs 3,328 sqft); Similar age (1998 vs 1996); Similar lot size (8,383 vs 8,400 sqft)
    $501,752
  • 20619 Autumn Terrace Ln, Katy, TX 77450
    3,316 sqft | $148/sqft | built 1996 | Similar size (3,316 vs 3,328 sqft); Built same year (1996); Similar lot size (8,666 vs 8,400 sqft)
    $491,628
  • 20718 Shadow Mill Ct, Katy, TX 77450
    3,342 sqft | $155/sqft | built 1997 | Similar size (3,342 vs 3,328 sqft); Similar age (1997 vs 1996); Similar lot size (8,700 vs 8,400 sqft)
    $518,445
  • 20619 Shadow Mill Ct, Katy, TX 77450
    3,243 sqft | $146/sqft | built 1993 | Similar size (3,243 vs 3,328 sqft); Similar age (1993 vs 1996); Similar lot size (8,400 vs 8,400 sqft)
    $474,390
  • 20511 Fawnbrook Ct, Katy, TX 77450
    3,324 sqft | $145/sqft | built 1993 | Similar size (3,324 vs 3,328 sqft); Similar age (1993 vs 1996); Similar lot size (8,064 vs 8,400 sqft)
    $480,676

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.