Harris Value

21522 Tallow Grove Ln, Katy, TX 77450

2,311 sqft, built 2004, in Oak Park Trails Appraised at $345,127 for 2026.

Harris County account 1234360010021

Appraised value
$345,127
Tax year 2026 · after any cap, before exemptions
Living area
2,311 sqft
$149 per sqft
Year built
2004
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, Oak Park Trails, 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 4.9% from $328,987 in 2025 to $345,127 in 2026.
  • Appraised value per square footThe current public record shows about $149 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Oak Park Trails neighborhood and ZIP 77450.
  • Neighborhood value signalAmong 871 residential records in the same neighborhood, the average appraised value is about $148 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -0.6% on average.

Comparable assessments

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

  • 2051 Bluffton Ln, Katy, TX 77450
    2,352 sqft | $143/sqft | built 2002 | Similar size (2,352 vs 2,311 sqft); Similar age (2002 vs 2004); Similar lot size (7,511 vs 7,475 sqft)
    $337,453
  • 1806 Winding Hollow Dr, Katy, TX 77450
    2,352 sqft | $144/sqft | built 2002 | Similar size (2,352 vs 2,311 sqft); Similar age (2002 vs 2004); Similar lot size (7,347 vs 7,475 sqft)
    $339,591
  • 2014 Bluffton Ln, Katy, TX 77450
    2,328 sqft | $154/sqft | built 2002 | Similar size (2,328 vs 2,311 sqft); Similar age (2002 vs 2004); Similar lot size (7,200 vs 7,475 sqft)
    $359,147
  • 21606 Ashford Grv, Katy, TX 77450
    2,380 sqft | $146/sqft | built 2002 | Similar size (2,380 vs 2,311 sqft); Similar age (2002 vs 2004); Similar lot size (7,492 vs 7,475 sqft)
    $347,458
  • 1918 Bevington Oaks Cir, Katy, TX 77450
    2,226 sqft | $161/sqft | built 2004 | Similar size (2,226 vs 2,311 sqft); Built same year (2004); Similar lot size (7,371 vs 7,475 sqft)
    $358,147

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.

  • 1219 Hollow Ash Ln, Katy, TX 77450
    September-16-2026 | 2,334 sqft | $156/sqft | built 1993 | Similar size (2,334 sqft); Sold after the valuation date
    $365,000
  • 20518 Hampshire Rocks Dr, Katy, TX 77450
    August-28-2026 | 2,282 sqft | $180/sqft | built 1990 | Similar size (2,282 sqft); Sold after the valuation date
    $409,900
  • 2302 Aspenfield Ln, Katy, TX 77450
    July-15-2026 | 2,426 sqft | $168/sqft | built 2004 | Similar size (2,426 sqft); Similar age (2004); Sold after the valuation date
    $407,000
  • 20710 Surrey Stone Ct, Katy, TX 77450
    June-24-2026 | 2,282 sqft | $169/sqft | built 1998 | Similar size (2,282 sqft); Moderate age difference (6 years older); Sold after the valuation date
    $385,000
  • 2510 Bristol Band Ln, Katy, TX 77450
    September-15-2026 | 2,468 sqft | $138/sqft | built 2006 | 7% size difference (2,468 sqft); Similar age (2006); Sold after the valuation date
    $339,900

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.