Harris Value

18914 Heron Ln, Tomball, TX 77377

3,164 sqft, built 1982, in Rosewood Hill Appraised at $520,300 for 2026.

Harris County account 1135010000077

Appraised value
$520,300
Tax year 2026 · after any cap, before exemptions
Market value
$526,936
Living area
3,164 sqft
$164 per sqft
Year built
1982
Good 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 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 10.0% from $473,000 in 2025 to $520,300 in 2026.
  • Appraised value per square footThe current public record shows about $164 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $6,636 above the appraised value used on this page.
  • 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.

  • 22906 Rosehollow Trl, Tomball, TX 77377
    3,238 sqft | $169/sqft | built 1983 | Similar size (3,238 vs 3,164 sqft); Similar age (1983 vs 1982); Similar lot size (44,423 vs 43,821 sqft)
    $545,961
  • 22815 Wren Ln, Tomball, TX 77377
    3,089 sqft | $213/sqft | built 1991 | Similar size (3,089 vs 3,164 sqft); Similar lot size (43,564 vs 43,821 sqft); Same quality (Good)
    $658,599
  • 22734 Rosehollow Trl, Tomball, TX 77377
    2,952 sqft | $194/sqft | built 1981 | 7% smaller (2,952 vs 3,164 sqft); Similar age (1981 vs 1982); Similar lot size (44,588 vs 43,821 sqft)
    $573,694
  • 18802 W Bluebird Ln, Tomball, TX 77377
    3,036 sqft | $175/sqft | built 1981 | Similar size (3,036 vs 3,164 sqft); Similar age (1981 vs 1982); Similar lot size (40,776 vs 43,821 sqft)
    $531,461
  • 18703 Quail Ln, Tomball, TX 77377
    2,973 sqft | $178/sqft | built 1982 | 6% smaller (2,973 vs 3,164 sqft); Built same year (1982); Similar lot size (45,938 vs 43,821 sqft)
    $530,532

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.