Harris Value

523 Ellingham Dr, Katy, TX 77450

3,313 sqft, built 1979, in Nottingham Country Appraised at $388,760 for 2026.

Harris County account 1102870000010

Appraised value
$388,760
Tax year 2026 · after any cap, before exemptions
Living area
3,313 sqft
$117 per sqft
Year built
1979
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, Nottingham Country, 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 3.5% from $403,000 in 2025 to $388,760 in 2026.
  • Appraised value per square footThe current public record shows about $117 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Nottingham Country neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 209 residential records in the same neighborhood, the average appraised value is about $135 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.8% on average.

Comparable assessments

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

  • 20735 Cranfield Dr, Katy, TX 77450
    3,333 sqft | $116/sqft | built 1980 | Similar size (3,333 vs 3,313 sqft); Similar age (1980 vs 1979); Similar lot size (9,000 vs 8,970 sqft)
    $385,864
  • 623 Ellingham Dr, Katy, TX 77450
    3,361 sqft | $128/sqft | built 1979 | Similar size (3,361 vs 3,313 sqft); Built same year (1979); Similar lot size (8,970 vs 8,970 sqft)
    $431,258
  • 20631 Cranfield Dr, Katy, TX 77450
    3,338 sqft | $116/sqft | built 1981 | Similar size (3,338 vs 3,313 sqft); Similar age (1981 vs 1979); Similar lot size (9,000 vs 8,970 sqft)
    $388,087
  • 20743 Cranfield Dr, Katy, TX 77450
    3,370 sqft | $116/sqft | built 1980 | Similar size (3,370 vs 3,313 sqft); Similar age (1980 vs 1979); Similar lot size (9,000 vs 8,970 sqft)
    $390,508
  • 20622 Chestnut Hills Dr, Katy, TX 77450
    3,282 sqft | $123/sqft | built 1980 | Similar size (3,282 vs 3,313 sqft); Similar age (1980 vs 1979); Similar lot size (9,225 vs 8,970 sqft)
    $402,489

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.

  • 1811 Treyburn Trl, Katy, TX 77450
    October-2-2026 | 3,329 sqft | $162/sqft | built 1996 | Similar size (3,329 sqft); Sold after the valuation date
    $540,000
  • 22919 Heathercroft Dr, Katy, TX 77450
    September-30-2026 | 3,424 sqft | $143/sqft | built 1998 | Similar size (3,424 sqft); Sold after the valuation date
    $489,000
  • 20618 Chestnut Hills Dr, Katy, TX 77450
    June-4-2026 | 3,236 sqft | $150/sqft | built 1980 | Similar size (3,236 sqft); Similar age (1980); Sold after the valuation date
    $485,000
  • 614 Houghton Rd, Katy, TX 77450
    August-4-2026 | 3,125 sqft | $142/sqft | built 1974 | 6% size difference (3,125 sqft); Moderate age difference (5 years older); Sold after the valuation date
    $445,000
  • 1431 Hoveden Dr, Katy, TX 77450
    August-19-2026 | 3,495 sqft | $209/sqft | built 1980 | 6% size difference (3,495 sqft); Similar age (1980); Sold after the valuation date
    $729,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Harris County Appraisal District. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.