Harris Value

21447 Park Mill Ln, Katy, TX 77450

1,901 sqft, built 1990, in Memorial Parkway Appraised at $284,322 for 2026.

Harris County account 1156030490002

Appraised value
$284,322
Tax year 2026 · after any cap, before exemptions
Living area
1,901 sqft
$150 per sqft
Year built
1990
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 0.5% from $285,668 in 2025 to $284,322 in 2026.
  • Appraised value per square footThe current public record shows about $150 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.

  • 21435 Park Mill Ln, Katy, TX 77450
    1,901 sqft | $150/sqft | built 1990 | Similar size (1,901 vs 1,901 sqft); Built same year (1990); Similar lot size (7,232 vs 7,245 sqft)
    $284,306
  • 21406 Park Timbers Ln, Katy, TX 77450
    1,921 sqft | $149/sqft | built 1990 | Similar size (1,921 vs 1,901 sqft); Built same year (1990); Similar lot size (6,900 vs 7,245 sqft)
    $286,230
  • 21439 Park Mill Ln, Katy, TX 77450
    1,982 sqft | $146/sqft | built 1990 | Similar size (1,982 vs 1,901 sqft); Built same year (1990); Similar lot size (7,245 vs 7,245 sqft)
    $289,964
  • 21314 Park Timbers Ln, Katy, TX 77450
    1,899 sqft | $157/sqft | built 1986 | Similar size (1,899 vs 1,901 sqft); Similar age (1986 vs 1990); Similar lot size (7,526 vs 7,245 sqft)
    $298,190
  • 21443 Park Mill Ln, Katy, TX 77450
    1,803 sqft | $162/sqft | built 1990 | 5% smaller (1,803 vs 1,901 sqft); Built same year (1990); Similar lot size (7,360 vs 7,245 sqft)
    $292,924

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.

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.

Recent sale history

Recent transfers help establish whether the county value is tracking real market behavior.

  • $275,000 sale recorded on May-8-2026