Harris Value

21403 Fones Rd, Tomball, TX 77377

2,037 sqft, built 1996 Appraised at $521,635 for 2026.

Harris County account 0420580010020

Appraised value
$521,635
Tax year 2026 · after any cap, before exemptions
Market value
$617,875
Living area
2,037 sqft
$256 per sqft
Year built
1996
Average quality
Homestead
Yes
Owner-occupied exemption on file

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 77377 and HCAD Appraisal Area 2576.05 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 10.0% from $474,214 in 2025 to $521,635 in 2026.
  • Appraised value per square footThe current public record shows about $256 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $96,240 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for ZIP 77377.
  • Neighborhood value signalAmong 67 residential records in the same neighborhood, the average appraised value is about $252 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +18.3% on average.

Comparable assessments

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

  • 21425 Fones Rd, Tomball, TX 77377
    1,761 sqft | $241/sqft | built 1995 | 14% smaller (1,761 vs 2,037 sqft); Similar age (1995 vs 1996); Similar lot size (108,630 vs 104,853 sqft)
    $424,589
  • 21615 Cypress Rosehill Rd, Tomball, TX 77377
    2,052 sqft | $218/sqft | built 1983 | Similar size (2,052 vs 2,037 sqft); Lot 13% smaller (91,515 vs 104,853 sqft); Same quality (Average)
    $446,601
  • 21307 Fones Rd, Tomball, TX 77377
    2,029 sqft | $241/sqft | built 1983 | Similar size (2,029 vs 2,037 sqft); Lot 14% larger (119,298 vs 104,853 sqft); Same quality (Average)
    $489,808
  • 21319 Fones Rd, Tomball, TX 77377
    1,860 sqft | $207/sqft | built 1990 | 9% smaller (1,860 vs 2,037 sqft); Similar lot size (96,376 vs 104,853 sqft); Same quality (Average)
    $385,844
  • 21503 Fones Rd, Tomball, TX 77377
    2,162 sqft | $293/sqft | built 1991 | 6% larger (2,162 vs 2,037 sqft); Similar age (1991 vs 1996); Similar lot size (107,924 vs 104,853 sqft)
    $634,082

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.