Tarrant Value

421 Marlin Ln, Keller, TX 76248

1,984 sqft, built 1977, in Wilde Acres. Appraised at $398,959 for 2026.

Tarrant County account 01893106

Appraised value
$398,959
Tax year 2026 · after any cap, before exemptions
Living area
1,984 sqft
$201 per sqft
Year built
1977
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 76248, Wilde Acres, and Keller 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 mailed, 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 TAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 7.2% from $372,241 in 2025 to $398,959 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 Wilde Acres neighborhood and ZIP 76248.
  • Neighborhood value signalAmong 691 residential records in the same neighborhood, the average appraised value is about $215 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.6% on average.

Comparable assessments

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

  • 436 Brian Dr, Keller, TX 76248
    2,000 sqft | $204/sqft | built 1976 | Similar size (2,000 vs 1,984 sqft); Similar age (1976 vs 1977); Similar lot size (18,171 vs 18,060 sqft)
    $408,575
  • 436 Marlin Ln, Keller, TX 76248
    1,907 sqft | $206/sqft | built 1973 | Similar size (1,907 vs 1,984 sqft); Similar age (1973 vs 1977); Similar lot size (17,055 vs 18,060 sqft)
    $392,389
  • 424 Marlin Ln, Keller, TX 76248
    2,089 sqft | $185/sqft | built 1978 | 5% larger (2,089 vs 1,984 sqft); Similar age (1978 vs 1977); Similar lot size (16,800 vs 18,060 sqft)
    $387,000
  • 405 Brian Dr, Keller, TX 76248
    1,900 sqft | $207/sqft | built 1979 | Similar size (1,900 vs 1,984 sqft); Similar age (1979 vs 1977); Similar lot size (16,380 vs 18,060 sqft)
    $393,232
  • 417 Marlin Ln, Keller, TX 76248
    1,821 sqft | $224/sqft | built 1977 | 8% smaller (1,821 vs 1,984 sqft); Built same year (1977); Similar lot size (19,180 vs 18,060 sqft)
    $408,431

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.

  • 1008 Conchos Cir W, Keller, TX 76248
    July-27-2026 | 1,969 sqft | $239/sqft | built 1977 | Similar size (1,969 sqft); Similar age (1977); Sold after the valuation date
    $470,000
  • 989 Post Oak Rd, Keller, TX 76248
    August-21-2026 | 2,055 sqft | $262/sqft | built 1989 | Similar size (2,055 sqft); Sold after the valuation date
    $539,000
  • 425 Marlin Ln, Keller, TX 76248
    April-7-2026 | 2,232 sqft | $224/sqft | built 1974 | 12% size difference (2,232 sqft); Similar age (1974); Sold after the valuation date
    $500,000
  • 333 Cindy St S, Keller, TX 76248
    July-8-2026 | 1,815 sqft | $220/sqft | built 1986 | 8% size difference (1,815 sqft); Moderate age difference (9 years newer); Sold after the valuation date
    $399,000
  • 1125 Sunrise Dr, Keller, TX 76248
    July-29-2026 | 2,412 sqft | $236/sqft | built 1983 | Moderate age difference (6 years newer); Sold after the valuation date
    $569,500

Public appraisal comparison for 2026. Prepared . Appraisal source: Tarrant 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.

Value history

Up 7.2% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$398,959+$26,718+7.2%
2025$372,241+$33,840+10.0%
2024$338,401+$30,764+10.0%
2023$307,637+$27,967+10.0%
2022$279,670+$25,425+10.0%
2021$254,245——
5-year total+$144,714+56.9%