Harris Value

18803 Heron Ln, Tomball, TX 77377

3,301 sqft, built 1981, in Rosewood Hill Appraised at $592,868 for 2026.

Harris County account 1135010000070

Appraised value
$592,868
Tax year 2026 · after any cap, before exemptions
Living area
3,301 sqft
$180 per sqft
Year built
1981
Good 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 77377 and Rosewood Hill 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 7.6% from $550,816 in 2025 to $592,868 in 2026.
  • Appraised value per square footThe current public record shows about $180 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Rosewood Hill neighborhood and ZIP 77377.
  • Neighborhood value signalAmong 287 residential records in the same neighborhood, the average appraised value is about $203 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +10.0% on average.

Comparable assessments

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

  • 18702 Quail Ln, Tomball, TX 77377
    3,296 sqft | $258/sqft | built 1990 | Similar size (3,296 vs 3,301 sqft); Similar lot size (52,538 vs 51,793 sqft); Same quality (Good)
    $849,687
  • 18811 Heron Ln, Tomball, TX 77377
    3,103 sqft | $186/sqft | built 1981 | 6% smaller (3,103 vs 3,301 sqft); Built same year (1981); Similar lot size (56,192 vs 51,793 sqft)
    $578,557
  • 22906 Rosehollow Trl, Tomball, TX 77377
    3,238 sqft | $169/sqft | built 1983 | Similar size (3,238 vs 3,301 sqft); Similar age (1983 vs 1981); Lot 14% smaller (44,423 vs 51,793 sqft)
    $545,961
  • 22814 Wren Ln, Tomball, TX 77377
    3,498 sqft | $139/sqft | built 1981 | 6% larger (3,498 vs 3,301 sqft); Built same year (1981); Lot 11% smaller (46,117 vs 51,793 sqft)
    $485,283
  • 18806 Meadow Lark Ln, Tomball, TX 77377
    2,955 sqft | $189/sqft | built 1983 | 10% smaller (2,955 vs 3,301 sqft); Similar age (1983 vs 1981); Similar lot size (53,570 vs 51,793 sqft)
    $559,425

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.