Harris Value

20015 Tilstock Dr, Katy, TX 77450

3,965 sqft, built 1987, in Kelliwood Appraised at $745,567 for 2026.

Harris County account 1153720030034

Appraised value
$745,567
Tax year 2026 · after any cap, before exemptions
Living area
3,965 sqft
$188 per sqft
Year built
1987
Excellent 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, 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 2.6% from $765,245 in 2025 to $745,567 in 2026.
  • Appraised value per square footThe current public record shows about $188 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Kelliwood neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 394 residential records in the same neighborhood, the average appraised value is about $162 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.9% on average.

Comparable assessments

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

  • 1650 Pebble Chase Dr, Katy, TX 77450
    4,046 sqft | $196/sqft | built 1989 | Similar size (4,046 vs 3,965 sqft); Similar age (1989 vs 1987); Similar lot size (14,100 vs 13,937 sqft)
    $793,210
  • 1642 Kelliwood Oaks Dr, Katy, TX 77450
    3,843 sqft | $169/sqft | built 1988 | Similar size (3,843 vs 3,965 sqft); Similar age (1988 vs 1987); Lot 11% smaller (12,401 vs 13,937 sqft)
    $649,574
  • 20107 Anson Falls Ct, Katy, TX 77450
    4,001 sqft | $165/sqft | built 1987 | Similar size (4,001 vs 3,965 sqft); Built same year (1987); Similar lot size (13,075 vs 13,937 sqft)
    $658,315
  • 1918 Sand Hollow Ln, Katy, TX 77450
    3,989 sqft | $170/sqft | built 1988 | Similar size (3,989 vs 3,965 sqft); Similar age (1988 vs 1987); Similar lot size (13,000 vs 13,937 sqft)
    $679,526
  • 19903 Erika Way Dr, Katy, TX 77450
    3,894 sqft | $193/sqft | built 1989 | Similar size (3,894 vs 3,965 sqft); Similar age (1989 vs 1987); Lot 11% smaller (12,350 vs 13,937 sqft)
    $750,856

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.

  • 19911 Kellicreek Dr, Katy, TX 77450
    June-30-2026 | 4,174 sqft | $186/sqft | built 1994 | 5% size difference (4,174 sqft); Moderate age difference (7 years newer); Sold after the valuation date
    $774,900
  • 2010 Briarchester Dr, Katy, TX 77450
    August-31-2026 | 3,753 sqft | $163/sqft | built 1998 | 5% size difference (3,753 sqft); Sold after the valuation date
    $612,500
  • 1911 Hartglen Cir, Katy, TX 77450
    August-21-2026 | 3,902 sqft | $205/sqft | built 1997 | Similar size (3,902 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $799,000
  • 20531 Amberlight Ln, Katy, TX 77450
    June-1-2026 | 3,642 sqft | $174/sqft | built 1988 | 8% size difference (3,642 sqft); Similar age (1988); Sold after the valuation date
    $635,000
  • 2414 Shelby Park Dr, Katy, TX 77450
    July-27-2026 | 3,800 sqft | $151/sqft | built 1992 | Similar size (3,800 sqft); Moderate age difference (5 years newer); Sold after the valuation date
    $575,000

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.