Harris Value

3739 Rio Vista St, Houston, TX 77021

4,141 sqft, built 1945, in South Side Appraised at $492,225 for 2026.

Harris County account 0611380700002

Appraised value
$492,225
Tax year 2026 · after any cap, before exemptions
Market value
$512,219
Living area
4,141 sqft
$119 per sqft
Year built
1945
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 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 increased 10.0% from $447,478 in 2025 to $492,225 in 2026.
  • Appraised value per square footThe current public record shows about $119 per square foot before any comparable-property adjustments.
  • Market/appraised spreadThe county market value is $19,994 above the appraised value used on this page.
  • Nearby comparison areaThis page starts the equity review with public records for the South Side neighborhood and ZIP 77021.
  • Neighborhood value signalAmong 73 residential records in the same neighborhood, the average appraised value is about $184 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +2.3% on average.

Comparable assessments

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

  • 3732 Parkwood Dr, Houston, TX 77021
    3,527 sqft | $187/sqft | built 1948 | 15% smaller (3,527 vs 4,141 sqft); Similar age (1948 vs 1945); Similar lot size (11,560 vs 11,305 sqft)
    $660,309
  • 3740 Parkwood Dr, Houston, TX 77021
    4,600 sqft | $191/sqft | built 1944 | 11% larger (4,600 vs 4,141 sqft); Similar age (1944 vs 1945); Similar lot size (10,200 vs 11,305 sqft)
    $878,234
  • 3725 Rio Vista St, Houston, TX 77021
    3,700 sqft | $123/sqft | built 1952 | 11% smaller (3,700 vs 4,141 sqft); Similar lot size (10,640 vs 11,305 sqft); Same quality (Good)
    $453,716
  • 5422 Leopold Dr, Houston, TX 77021
    4,783 sqft | $92/sqft | built 1946 | Similar age (1946 vs 1945); Similar lot size (10,220 vs 11,305 sqft); Same quality (Good)
    $440,000
  • 5414 Leopold Dr, Houston, TX 77021
    3,642 sqft | $135/sqft | built 1945 | 12% smaller (3,642 vs 4,141 sqft); Built same year (1945); Lot 16% smaller (9,490 vs 11,305 sqft)
    $492,756

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.

  • 3449 N Parkwood Dr, Houston, TX 77021
    September-14-2026 | 4,763 sqft | $163/sqft | built 1949 | Moderate age difference (4 years newer); Sold after the valuation date
    $775,000
  • 3346 Parkwood Dr, Houston, TX 77021
    May-8-2026 | 4,010 sqft | $318/sqft | built 1935 | Similar size (4,010 sqft); Moderate age difference (10 years older); Sold after the valuation date
    $1,275,000

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.