Harris Value

18139 Westlock Ct, Tomball, TX 77377

1,762 sqft, built 1994, in Westbourne Appraised at $294,955 for 2026.

Harris County account 1143950170005

Appraised value
$294,955
Tax year 2026 · after any cap, before exemptions
Living area
1,762 sqft
$167 per sqft
Year built
1994
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 77377 and Westbourne 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 1.7% from $289,883 in 2025 to $294,955 in 2026.
  • Appraised value per square footThe current public record shows about $167 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Westbourne neighborhood and ZIP 77377.
  • Neighborhood value signalAmong 767 residential records in the same neighborhood, the average appraised value is about $175 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.7% on average.

Comparable assessments

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

  • 18035 Drum Heller Ln, Tomball, TX 77377
    1,767 sqft | $157/sqft | built 1996 | Similar size (1,767 vs 1,762 sqft); Similar age (1996 vs 1994); Similar lot size (7,552 vs 7,708 sqft)
    $277,917
  • 18103 Lundar Ln, Tomball, TX 77377
    1,767 sqft | $158/sqft | built 1995 | Similar size (1,767 vs 1,762 sqft); Similar age (1995 vs 1994); Similar lot size (7,987 vs 7,708 sqft)
    $279,831
  • 18238 Drum Heller Ln, Tomball, TX 77377
    1,749 sqft | $173/sqft | built 1996 | Similar size (1,749 vs 1,762 sqft); Similar age (1996 vs 1994); Similar lot size (7,504 vs 7,708 sqft)
    $302,793
  • 12303 Bowsman Dr, Tomball, TX 77377
    1,755 sqft | $165/sqft | built 1995 | Similar size (1,755 vs 1,762 sqft); Similar age (1995 vs 1994); Similar lot size (7,172 vs 7,708 sqft)
    $288,902
  • 12227 Bowsman Dr, Tomball, TX 77377
    1,726 sqft | $167/sqft | built 1995 | Similar size (1,726 vs 1,762 sqft); Similar age (1995 vs 1994); Similar lot size (7,172 vs 7,708 sqft)
    $288,084

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.

  • 11718 Canyon Vista Ln, Tomball, TX 77377
    September-15-2026 | 1,794 sqft | $181/sqft | built 2000 | Similar size (1,794 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $324,900
  • 19618 Nara Vista Dr, Tomball, TX 77377
    August-13-2026 | 1,818 sqft | $169/sqft | built 2003 | Similar size (1,818 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $307,000
  • 18202 Almonte Ln, Tomball, TX 77377
    August-14-2026 | 1,664 sqft | $159/sqft | built 2000 | 6% size difference (1,664 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $265,000
  • 11707 Mesa Wells Dr, Tomball, TX 77377
    June-10-2026 | 1,822 sqft | $173/sqft | built 1998 | Similar size (1,822 sqft); Moderate age difference (4 years newer); Sold after the valuation date
    $315,000
  • 15630 Hatfield Hollow Dr, Tomball, TX 77377
    May-11-2026 | 1,764 sqft | $150/sqft | built 2000 | Similar size (1,764 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $265,000

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.