Harris Value

18323 Calabria Harbor Trl, Tomball, TX 77377

2,112 sqft, built 2025 Appraised at $324,633 for 2026.

Harris County account 1472850010012

Appraised value
$324,633
Tax year 2026 · after any cap, before exemptions
Market value
$337,653
Living area
2,112 sqft
$154 per sqft
Year built
2025
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 2545.01 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 changed from $51,700 in 2025 to $324,633 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Appraised value per square footThe current public record shows about $154 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $13,020 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 157 residential records in the same neighborhood, the average appraised value is about $159 per square foot.

Comparable assessments

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

  • 18246 Sonresa Way, Tomball, TX 77377
    2,123 sqft | $156/sqft | built 2025 | Similar size (2,123 vs 2,112 sqft); Built same year (2025); Similar lot size (5,088 vs 5,040 sqft)
    $330,977
  • 18018 Sonresa Way, Tomball, TX 77377
    2,085 sqft | $173/sqft | built 2024 | Similar size (2,085 vs 2,112 sqft); Similar age (2024 vs 2025); Similar lot size (5,203 vs 5,040 sqft)
    $359,824
  • 18222 Sonresa Way, Tomball, TX 77377
    2,087 sqft | $169/sqft | built 2024 | Similar size (2,087 vs 2,112 sqft); Similar age (2024 vs 2025); Similar lot size (5,218 vs 5,040 sqft)
    $352,557
  • 18226 Sonresa Way, Tomball, TX 77377
    2,054 sqft | $171/sqft | built 2024 | Similar size (2,054 vs 2,112 sqft); Similar age (2024 vs 2025); Similar lot size (5,197 vs 5,040 sqft)
    $350,353
  • 20823 Whist Air Ct, Tomball, TX 77377
    2,166 sqft | $168/sqft | built 2025 | Similar size (2,166 vs 2,112 sqft); Built same year (2025); Similar lot size (5,282 vs 5,040 sqft)
    $364,644

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.

  • 19242 Red Cascade Ct, Tomball, TX 77377
    August-14-2026 | 2,073 sqft | $145/sqft | built 2020 | Similar size (2,073 sqft); Moderate age difference (5 years older); Sold after the valuation date
    $300,000
  • 17210 Rock Willow Ln, Tomball, TX 77377
    August-31-2026 | 2,380 sqft | $134/sqft | built 2021 | 13% size difference (2,380 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $319,000
  • 18834 Magnolia Arbor Ln, Tomball, TX 77377
    August-11-2026 | 2,166 sqft | $159/sqft | built 2005 | Similar size (2,166 sqft); Sold after the valuation date
    $344,990
  • 21823 Rose Maris Ln, Tomball, TX 77377
    August-12-2026 | 2,303 sqft | $156/sqft | built 2018 | 9% size difference (2,303 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $360,000
  • 18218 Spruce Cottage Dr, Tomball, TX 77377
    August-19-2026 | 2,381 sqft | $129/sqft | built 2025 | 13% size difference (2,381 sqft); Similar age (2025); Sold after the valuation date
    $307,294

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.

  • $333,985 sale recorded on April-30-2026