Harris Value

5215 Cosby St 770, Houston, TX 77021

1,100 sqft, built 1949, in South Side Appraised at $240,877 for 2026.

Harris County account 0771020120034

Appraised value
$240,877
Tax year 2026 · after any cap, before exemptions
Living area
1,100 sqft
$219 per sqft
Year built
1949
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 increased 6.1% from $227,000 in 2025 to $240,877 in 2026.
  • Appraised value per square footThe current public record shows about $219 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 358 residential records in the same neighborhood, the average appraised value is about $120 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +5.8% on average.

Comparable assessments

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

  • 5210 Balkin St, Houston, TX 77021
    1,132 sqft | $171/sqft | built 1949 | Similar size (1,132 vs 1,100 sqft); Built same year (1949); Similar lot size (7,074 vs 6,908 sqft)
    $193,888
  • 5218 Keystone St, Houston, TX 77021
    1,105 sqft | $165/sqft | built 1953 | Similar size (1,105 vs 1,100 sqft); Similar age (1953 vs 1949); Similar lot size (6,692 vs 6,908 sqft)
    $182,391
  • 5339 Keystone St, Houston, TX 77021
    1,096 sqft | $190/sqft | built 1950 | Similar size (1,096 vs 1,100 sqft); Similar age (1950 vs 1949); Similar lot size (6,474 vs 6,908 sqft)
    $208,585
  • 5251 Kingsbury St, Houston, TX 77021
    1,100 sqft | $116/sqft | built 1953 | Similar size (1,100 vs 1,100 sqft); Similar age (1953 vs 1949); Similar lot size (6,529 vs 6,908 sqft)
    $127,399
  • 5234 Browncroft St, Houston, TX 77021
    1,096 sqft | $162/sqft | built 1953 | Similar size (1,096 vs 1,100 sqft); Similar age (1953 vs 1949); Similar lot size (6,534 vs 6,908 sqft)
    $178,102

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.

  • 4914 Yellowstone Blvd, Houston, TX 77021
    August-21-2026 | 1,090 sqft | $146/sqft | built 1955 | Similar size (1,090 sqft); Moderate age difference (6 years newer); Sold after the valuation date
    $159,000
  • 6226 Sherwood Dr, Houston, TX 77021
    September-15-2026 | 1,073 sqft | $107/sqft | built 1940 | Similar size (1,073 sqft); Moderate age difference (9 years older); Sold after the valuation date
    $114,900
  • 5115 Winnetka St, Houston, TX 77021
    June-24-2026 | 1,086 sqft | $97/sqft | built 1947 | Similar size (1,086 sqft); Similar age (1947); Sold after the valuation date
    $105,000
  • 3457 Mainer St, Houston, TX 77021
    August-31-2026 | 1,054 sqft | $166/sqft | built 1950 | Similar size (1,054 sqft); Similar age (1950); Sold after the valuation date
    $175,000
  • 5244 Enyart St, Houston, TX 77021
    July-10-2026 | 1,192 sqft | $126/sqft | built 1949 | 8% size difference (1,192 sqft); Similar age (1949); Sold after the valuation date
    $150,000

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.