Harris Value

3738 Mainer St, Houston, TX 77021

1,885 sqft, built 2022, in South Side Appraised at $379,808 for 2026.

Harris County account 1452260010001

Appraised value
$379,808
Tax year 2026 · after any cap, before exemptions
Living area
1,885 sqft
$201 per sqft
Year built
2022
Good 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 increased 5.2% from $361,046 in 2025 to $379,808 in 2026.
  • Appraised value per square footThe current public record shows about $201 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 402 residential records in the same neighborhood, the average appraised value is about $178 per square foot.

Comparable assessments

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

  • 6740 Peerless St A, Houston, TX 77021
    1,892 sqft | $187/sqft | built 2023 | Similar size (1,892 vs 1,885 sqft); Similar age (2023 vs 2022); Similar lot size (1,892 vs 1,900 sqft)
    $354,051
  • 6835 Del Rio St, Houston, TX 77021
    1,886 sqft | $183/sqft | built 2022 | Similar size (1,886 vs 1,885 sqft); Built same year (2022); Similar lot size (1,856 vs 1,900 sqft)
    $345,207
  • 6748 Del Rio St, Houston, TX 77021
    1,891 sqft | $188/sqft | built 2021 | Similar size (1,891 vs 1,885 sqft); Similar age (2021 vs 2022); Similar lot size (1,964 vs 1,900 sqft)
    $356,165
  • 6730 Peerless St D, Houston, TX 77021
    1,840 sqft | $185/sqft | built 2022 | Similar size (1,840 vs 1,885 sqft); Built same year (2022); Similar lot size (1,866 vs 1,900 sqft)
    $339,680
  • 3409 Yellowstone Blvd, Houston, TX 77021
    1,886 sqft | $190/sqft | built 2022 | Similar size (1,886 vs 1,885 sqft); Built same year (2022); Similar lot size (2,007 vs 1,900 sqft)
    $358,937

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.

  • 4013 Griggs Rd UNIT I, Houston, TX 77021
    September-24-2026 | 1,795 sqft | $187/sqft | built 2025 | Similar size (1,795 sqft); Similar age (2025); Sold after the valuation date
    $334,900
  • 4013 Griggs Rd UNIT D, Houston, TX 77021
    September-21-2026 | 1,795 sqft | $187/sqft | built 2025 | Similar size (1,795 sqft); Similar age (2025); Sold after the valuation date
    $334,900
  • 4013 Griggs Rd UNIT F, Houston, TX 77021
    September-18-2026 | 1,795 sqft | $200/sqft | built 2025 | Similar size (1,795 sqft); Similar age (2025); Sold after the valuation date
    $359,900
  • 4213 Idaho St, Houston, TX 77021
    September-17-2026 | 1,984 sqft | $186/sqft | built 2026 | 5% size difference (1,984 sqft); Moderate age difference (4 years newer); Sold after the valuation date
    $369,000
  • 3347 Kilgore St, Houston, TX 77021
    August-21-2026 | 2,005 sqft | $149/sqft | built 2015 | 6% size difference (2,005 sqft); Moderate age difference (7 years older); Sold after the valuation date
    $299,000

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.