Harris Value

603 Gammon Dr, Houston, TX 77022

1,637 sqft, built 1955, in Northside Appraised at $227,565 for 2026.

Harris County account 0820480000033

Appraised value
$227,565
Tax year 2026 · after any cap, before exemptions
Market value
$228,319
Living area
1,637 sqft
$139 per sqft
Year built
1955
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 77022 and Northside 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 $206,878 in 2025 to $227,565 in 2026.
  • Appraised value per square footThe current public record shows about $139 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $754 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the Northside neighborhood and ZIP 77022.
  • Neighborhood value signalAmong 653 residential records in the same neighborhood, the average appraised value is about $146 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +2.8% on average.

Comparable assessments

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

  • 643 Delz St, Houston, TX 77022
    1,574 sqft | $149/sqft | built 1953 | Similar size (1,574 vs 1,637 sqft); Similar age (1953 vs 1955); Similar lot size (12,461 vs 12,866 sqft)
    $235,096
  • 135 E Thornton Rd, Houston, TX 77022
    1,706 sqft | $143/sqft | built 1959 | Similar size (1,706 vs 1,637 sqft); Similar age (1959 vs 1955); Similar lot size (12,560 vs 12,866 sqft)
    $243,484
  • 231 E Thornton Rd, Houston, TX 77022
    1,684 sqft | $149/sqft | built 1966 | Similar size (1,684 vs 1,637 sqft); Similar lot size (12,560 vs 12,866 sqft); Same quality (Average)
    $251,195
  • 123 E Thornton Rd, Houston, TX 77022
    1,698 sqft | $150/sqft | built 1966 | Similar size (1,698 vs 1,637 sqft); Similar lot size (12,560 vs 12,866 sqft); Same quality (Average)
    $254,511
  • 610 Nest Ln, Houston, TX 77022
    1,672 sqft | $116/sqft | built 1955 | Similar size (1,672 vs 1,637 sqft); Built same year (1955); Lot 16% smaller (10,764 vs 12,866 sqft)
    $193,489

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.

  • 220 Palmyra St, Houston, TX 77022
    July-17-2026 | 1,600 sqft | $184/sqft | built 1965 | Similar size (1,600 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $295,000
  • 1213 Post St, Houston, TX 77022
    August-26-2026 | 1,632 sqft | $101/sqft | built 1940 | Similar size (1,632 sqft); Sold after the valuation date
    $165,000
  • 7115 Roswell St, Houston, TX 77022
    June-29-2026 | 1,668 sqft | $168/sqft | built 1948 | Similar size (1,668 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $279,900
  • 414 E 43rd St, Houston, TX 77022
    May-22-2026 | 1,656 sqft | $163/sqft | built 1962 | Similar size (1,656 sqft); Moderate age difference (7 years newer); Sold after the valuation date
    $269,999
  • 719 E 40th 1/2 St, Houston, TX 77022
    August-31-2026 | 1,706 sqft | $161/sqft | built 1964 | Similar size (1,706 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $274,500

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.