Harris Value

21410 Park Rock Ln, Katy, TX 77450

2,317 sqft, built 2016, in Memorial Parkway Appraised at $407,775 for 2026.

Harris County account 1085040000028

Appraised value
$407,775
Tax year 2026 · after any cap, before exemptions
Living area
2,317 sqft
$176 per sqft
Year built
2016
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 8.8% from $374,947 in 2025 to $407,775 in 2026.
  • Appraised value per square footThe current public record shows about $176 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.

  • 711 Park Knoll Ln, Katy, TX 77450
    2,317 sqft | $173/sqft | built 2016 | Similar size (2,317 vs 2,317 sqft); Built same year (2016); Lot 13% larger (8,625 vs 7,656 sqft)
    $401,238
  • 718 Park Knoll Ln, Katy, TX 77450
    2,449 sqft | $162/sqft | built 2014 | 6% larger (2,449 vs 2,317 sqft); Similar age (2014 vs 2016); Similar lot size (7,475 vs 7,656 sqft)
    $396,706
  • 21526 Highland Knolls Dr, Katy, TX 77450
    2,328 sqft | $153/sqft | built 2002 | Similar size (2,328 vs 2,317 sqft); Similar lot size (7,475 vs 7,656 sqft); Same quality (Average)
    $356,406
  • 21315 Park Bluff Dr, Katy, TX 77450
    2,222 sqft | $175/sqft | built 2010 | Similar size (2,222 vs 2,317 sqft); Similar lot size (8,050 vs 7,656 sqft); Same quality (Average)
    $389,099
  • 927 Grand Junction Dr, Katy, TX 77450
    2,421 sqft | $172/sqft | built 2015 | Similar size (2,421 vs 2,317 sqft); Similar age (2015 vs 2016); Similar lot size (6,900 vs 7,656 sqft)
    $415,527

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.