Harris Value

21310 Park Bishop Dr, Katy, TX 77450

2,884 sqft, built 1993, in Memorial Parkway Appraised at $373,049 for 2026.

Harris County account 1159870470012

Appraised value
$373,049
Tax year 2026 · after any cap, before exemptions
Living area
2,884 sqft
$129 per sqft
Year built
1993
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 decreased 2.9% from $384,193 in 2025 to $373,049 in 2026.
  • Appraised value per square footThe current public record shows about $129 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 229 residential records in the same neighborhood, the average appraised value is about $160 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +2.3% on average.

Comparable assessments

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

  • 21415 Park Post Ln, Katy, TX 77450
    2,878 sqft | $120/sqft | built 1989 | Similar size (2,878 vs 2,884 sqft); Similar age (1989 vs 1993); Similar lot size (6,440 vs 6,300 sqft)
    $345,279
  • 21318 Park Bishop Dr, Katy, TX 77450
    2,819 sqft | $119/sqft | built 1988 | Similar size (2,819 vs 2,884 sqft); Similar age (1988 vs 1993); Similar lot size (6,447 vs 6,300 sqft)
    $336,027
  • 21314 Park Bishop Dr, Katy, TX 77450
    2,705 sqft | $129/sqft | built 1989 | 6% smaller (2,705 vs 2,884 sqft); Similar age (1989 vs 1993); Similar lot size (6,505 vs 6,300 sqft)
    $349,529
  • 21323 Park Bishop Dr, Katy, TX 77450
    2,592 sqft | $127/sqft | built 1988 | 10% smaller (2,592 vs 2,884 sqft); Similar age (1988 vs 1993); Similar lot size (6,325 vs 6,300 sqft)
    $328,668
  • 21318 Park Orchard Dr, Katy, TX 77450
    2,592 sqft | $134/sqft | built 1987 | 10% smaller (2,592 vs 2,884 sqft); Similar lot size (6,326 vs 6,300 sqft); Same quality (Average)
    $347,326

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.

  • 21519 Canyon Terrace Ln, Katy, TX 77450
    July-17-2026 | 2,796 sqft | $154/sqft | built 2001 | Similar size (2,796 sqft); Moderate age difference (8 years newer); Sold after the valuation date
    $430,000
  • 20719 Castle Bend Dr, Katy, TX 77450
    July-30-2026 | 2,884 sqft | $139/sqft | built 1982 | Similar size (2,884 sqft); Sold after the valuation date
    $399,900
  • 20619 Prince Creek Dr, Katy, TX 77450
    August-28-2026 | 2,794 sqft | $174/sqft | built 1982 | Similar size (2,794 sqft); Sold after the valuation date
    $487,000
  • 21450 Park Post Ln, Katy, TX 77450
    September-14-2026 | 2,448 sqft | $155/sqft | built 1989 | Moderate age difference (4 years older); Sold after the valuation date
    $380,000
  • 911 Montview Dr, Katy, TX 77450
    August-25-2026 | 2,741 sqft | $157/sqft | built 1983 | Similar size (2,741 sqft); Moderate age difference (10 years older); Sold after the valuation date
    $429,900

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.