Harris Value

20515 Big Wells Dr, Katy, TX 77449

2,509 sqft, built 1992, in Sundown Glen Appraised at $310,789 for 2026.

Harris County account 1161600060083

Appraised value
$310,789
Tax year 2026 · after any cap, before exemptions
Living area
2,509 sqft
$124 per sqft
Year built
1992
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, Sundown Glen, 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 5.3% from $295,069 in 2025 to $310,789 in 2026.
  • Appraised value per square footThe current public record shows about $124 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Sundown Glen neighborhood and ZIP 77449.
  • Neighborhood value signalAmong 176 residential records in the same neighborhood, the average appraised value is about $141 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +1.3% on average.

Comparable assessments

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

  • 2915 Silver Cedar Trl, Katy, TX 77449
    2,488 sqft | $119/sqft | built 1993 | Similar size (2,488 vs 2,509 sqft); Similar age (1993 vs 1992); Similar lot size (7,559 vs 7,460 sqft)
    $296,187
  • 20626 Red Sun Dr, Katy, TX 77449
    2,473 sqft | $119/sqft | built 1993 | Similar size (2,473 vs 2,509 sqft); Similar age (1993 vs 1992); Similar lot size (7,236 vs 7,460 sqft)
    $293,349
  • 20502 Cat Springs Ct, Katy, TX 77449
    2,550 sqft | $113/sqft | built 1991 | Similar size (2,550 vs 2,509 sqft); Similar age (1991 vs 1992); Similar lot size (7,241 vs 7,460 sqft)
    $287,903
  • 2918 Sinton Ct, Katy, TX 77449
    2,470 sqft | $120/sqft | built 1993 | Similar size (2,470 vs 2,509 sqft); Similar age (1993 vs 1992); Similar lot size (7,774 vs 7,460 sqft)
    $296,662
  • 20607 Valley Wells Dr, Katy, TX 77449
    2,464 sqft | $113/sqft | built 1990 | Similar size (2,464 vs 2,509 sqft); Similar age (1990 vs 1992); Similar lot size (7,177 vs 7,460 sqft)
    $278,617

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.

  • 3902 Flatwood Dr, Katy, TX 77449
    September-25-2026 | 2,464 sqft | $134/sqft | built 2001 | Similar size (2,464 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $330,000
  • 19706 Windmoor Ct, Katy, TX 77449
    September-28-2026 | 2,400 sqft | $120/sqft | built 1998 | Similar size (2,400 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $289,000
  • 20511 Barker Bend Ct, Katy, TX 77449
    September-21-2026 | 2,490 sqft | $112/sqft | built 2003 | Similar size (2,490 sqft); Sold after the valuation date
    $280,000
  • 6422 Mustang Draw Ln, Katy, TX 77449
    August-20-2026 | 2,488 sqft | $125/sqft | built 2001 | Similar size (2,488 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $310,000
  • 6510 Briar Moss Ln, Katy, TX 77449
    August-17-2026 | 2,515 sqft | $121/sqft | built 2006 | Similar size (2,515 sqft); Sold after the valuation date
    $305,000

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.