Harris Value

18318 Willow Moss Dr, Katy, TX 77449

1,406 sqft, built 1998, in Autumn Run Appraised at $239,536 for 2026.

Harris County account 1153750090015

Appraised value
$239,536
Tax year 2026 · after any cap, before exemptions
Living area
1,406 sqft
$170 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 77449, Autumn Run, 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 1.1% from $236,868 in 2025 to $239,536 in 2026.
  • Appraised value per square footThe current public record shows about $170 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Autumn Run neighborhood and ZIP 77449.
  • Neighborhood value signalAmong 707 residential records in the same neighborhood, the average appraised value is about $143 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.4% on average.

Comparable assessments

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

  • 18323 Willow Moss Dr, Katy, TX 77449
    1,406 sqft | $167/sqft | built 1998 | Similar size (1,406 vs 1,406 sqft); Built same year (1998); Similar lot size (6,300 vs 6,300 sqft)
    $235,224
  • 18402 Willow Moss Dr, Katy, TX 77449
    1,406 sqft | $177/sqft | built 1998 | Similar size (1,406 vs 1,406 sqft); Built same year (1998); Similar lot size (6,300 vs 6,300 sqft)
    $248,835
  • 18311 Willow Moss Dr, Katy, TX 77449
    1,400 sqft | $164/sqft | built 1998 | Similar size (1,400 vs 1,406 sqft); Built same year (1998); Similar lot size (6,300 vs 6,300 sqft)
    $229,369
  • 18426 Forest Dew Dr, Katy, TX 77449
    1,366 sqft | $171/sqft | built 1999 | Similar size (1,366 vs 1,406 sqft); Similar age (1999 vs 1998); Similar lot size (6,449 vs 6,300 sqft)
    $233,761
  • 6627 Amberfield Ln, Katy, TX 77449
    1,458 sqft | $167/sqft | built 2001 | Similar size (1,458 vs 1,406 sqft); Similar age (2001 vs 1998); Similar lot size (6,692 vs 6,300 sqft)
    $243,325

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.

  • 19407 Otter Trail Ct, Katy, TX 77449
    August-31-2026 | 1,404 sqft | $142/sqft | built 2006 | Similar size (1,404 sqft); Moderate age difference (8 years newer); Sold after the valuation date
    $199,900
  • 19342 Montclair Meadow Ln, Katy, TX 77449
    August-19-2026 | 1,375 sqft | $167/sqft | built 2005 | Similar size (1,375 sqft); Moderate age difference (7 years newer); Sold after the valuation date
    $229,000
  • 5919 Bradworthy Dr, Katy, TX 77449
    August-31-2026 | 1,351 sqft | $148/sqft | built 2003 | Similar size (1,351 sqft); Moderate age difference (5 years newer); Sold after the valuation date
    $200,000
  • 4607 Cypress Colony Ln, Katy, TX 77449
    July-14-2026 | 1,405 sqft | $177/sqft | built 2007 | Similar size (1,405 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $249,000
  • 19519 Cairns Dr, Katy, TX 77449
    August-31-2026 | 1,495 sqft | $153/sqft | built 2002 | 6% size difference (1,495 sqft); Moderate age difference (4 years newer); Sold after the valuation date
    $229,000

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.