Harris Value

21402 Park Downe Ln, Katy, TX 77450

3,016 sqft, built 1975, in Memorial Parkway Appraised at $308,604 for 2026.

Harris County account 1085020000046

Appraised value
$308,604
Tax year 2026 · after any cap, before exemptions
Living area
3,016 sqft
$102 per sqft
Year built
1975
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 77450, Memorial Parkway, 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 0.7% from $306,607 in 2025 to $308,604 in 2026.
  • Appraised value per square footThe current public record shows about $102 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Memorial Parkway neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 490 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 +1.9% on average.

Comparable assessments

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

  • 21107 Park Villa Dr, Katy, TX 77450
    3,020 sqft | $120/sqft | built 1976 | Similar size (3,020 vs 3,016 sqft); Similar age (1976 vs 1975); Similar lot size (8,848 vs 9,216 sqft)
    $363,439
  • 1231 Park Royale Ln, Katy, TX 77450
    2,916 sqft | $112/sqft | built 1978 | Similar size (2,916 vs 3,016 sqft); Similar age (1978 vs 1975); Similar lot size (8,890 vs 9,216 sqft)
    $326,442
  • 1218 Westgreen Blvd, Katy, TX 77450
    3,142 sqft | $98/sqft | built 1978 | Similar size (3,142 vs 3,016 sqft); Similar age (1978 vs 1975); Similar lot size (9,080 vs 9,216 sqft)
    $308,501
  • 1106 Westgreen Blvd, Katy, TX 77450
    2,821 sqft | $100/sqft | built 1978 | 6% smaller (2,821 vs 3,016 sqft); Similar age (1978 vs 1975); Similar lot size (9,290 vs 9,216 sqft)
    $283,497
  • 20911 Park Brush Cir, Katy, TX 77450
    2,890 sqft | $118/sqft | built 1977 | Similar size (2,890 vs 3,016 sqft); Similar age (1977 vs 1975); Similar lot size (8,393 vs 9,216 sqft)
    $339,847

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.

  • 614 Houghton Rd, Katy, TX 77450
    August-4-2026 | 3,125 sqft | $142/sqft | built 1974 | Similar size (3,125 sqft); Similar age (1974); Sold after the valuation date
    $445,000
  • 23027 Red River Dr, Katy, TX 77450
    August-31-2026 | 3,005 sqft | $133/sqft | built 1989 | Similar size (3,005 sqft); Sold after the valuation date
    $400,000
  • 20911 Park Brush Cir, Katy, TX 77450
    September-17-2026 | 2,890 sqft | $119/sqft | built 1977 | Similar size (2,890 sqft); Similar age (1977); Sold after the valuation date
    $345,000
  • 1214 Shillington Dr, Katy, TX 77450
    July-9-2026 | 3,024 sqft | $144/sqft | built 1980 | Similar size (3,024 sqft); Moderate age difference (5 years newer); Sold after the valuation date
    $435,000
  • 20115 Dering Ct, Katy, TX 77450
    August-21-2026 | 3,032 sqft | $115/sqft | built 1973 | Similar size (3,032 sqft); Similar age (1973); Sold after the valuation date
    $350,000

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.