Harris Value

3918 Porter St, Houston, TX 77021

1,558 sqft, built 1940, in South Side Appraised at $236,008 for 2026.

Harris County account 0752370030005

Appraised value
$236,008
Tax year 2026 · after any cap, before exemptions
Living area
1,558 sqft
$151 per sqft
Year built
1940
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 77021 and South Side 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 decreased 11.6% from $266,972 in 2025 to $236,008 in 2026.
  • Appraised value per square footThe current public record shows about $151 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the South Side neighborhood and ZIP 77021.
  • Neighborhood value signalAmong 581 residential records in the same neighborhood, the average appraised value is about $133 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +9.1% on average.

Comparable assessments

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

  • 3918 Tristan St, Houston, TX 77021
    1,486 sqft | $134/sqft | built 1940 | Similar size (1,486 vs 1,558 sqft); Built same year (1940); Similar lot size (6,150 vs 6,150 sqft)
    $199,387
  • 3931 Florinda St, Houston, TX 77021
    1,554 sqft | $134/sqft | built 1952 | Similar size (1,554 vs 1,558 sqft); Similar lot size (6,150 vs 6,150 sqft); Same quality (Average)
    $208,128
  • 3915 Florinda St, Houston, TX 77021
    1,563 sqft | $146/sqft | built 1952 | Similar size (1,563 vs 1,558 sqft); Similar lot size (6,150 vs 6,150 sqft); Same quality (Average)
    $227,995
  • 3919 Tolnay St, Houston, TX 77021
    1,559 sqft | $95/sqft | built 1940 | Similar size (1,559 vs 1,558 sqft); Built same year (1940); Similar lot size (6,150 vs 6,150 sqft)
    $148,218
  • 3931 Alsace St, Houston, TX 77021
    1,527 sqft | $87/sqft | built 1940 | Similar size (1,527 vs 1,558 sqft); Built same year (1940); Similar lot size (6,150 vs 6,150 sqft)
    $132,361

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.

  • 7019 Sherwood Dr, Houston, TX 77021
    September-22-2026 | 1,532 sqft | $75/sqft | built 1950 | Similar size (1,532 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $114,900
  • 4626 Dewberry St, Houston, TX 77021
    September-30-2026 | 1,376 sqft | $155/sqft | built 1940 | 12% size difference (1,376 sqft); Similar age (1940); Sold after the valuation date
    $213,000
  • 4935 Enyart St, Houston, TX 77021
    September-21-2026 | 1,380 sqft | $174/sqft | built 1950 | 11% size difference (1,380 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $240,000
  • 5118 Cortelyou Ln, Houston, TX 77021
    June-16-2026 | 1,607 sqft | $106/sqft | built 1950 | Similar size (1,607 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $169,900
  • 4522 Dewberry St, Houston, TX 77021
    July-24-2026 | 1,677 sqft | $116/sqft | built 1945 | 8% size difference (1,677 sqft); Moderate age difference (5 years newer); Sold after the valuation date
    $195,000

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.