Collin Value

503 Willow Oak St, Allen, TX 75002

1,338 sqft, built 1981, in Oak Hill. Appraised at $321,831 for 2026.

Collin County account 490944

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Appraised value$321,831
Similar homes$328,184
No gap: similar homes are at or above the county value · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Appraised value
$321,831
Tax year 2026
Living area
1,338 sqft
$241 per sqft
Year built
1981

What we found

Unequal assessment

Weak

2 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $243.57/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $90,000. Counting your land in place of theirs where theirs is less, they support a value of $328,184.

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 75002, Oak Hill, and Fairview 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 CCAD records highlight what may be worth checking before you file.

  • Assessment changeThe appraised value increased 9.6% from $293,611 in 2025 to $321,831 in 2026.
  • Appraised value per square footThe current public record shows about $241 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Oak Hill neighborhood and ZIP 75002.
  • Neighborhood value signalAmong 156 residential records in the same neighborhood, the average appraised value is about $222 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +10.3% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

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.

  • 1228 Collin Dr, Allen, TX 75002
    October-8-2026 | 1,343 sqft | $164/sqft | built 1984 | Similar size (1,343 sqft); Similar age (1984); Sold after the valuation date
    $220,000
  • 538 Ridgemont Dr, Allen, TX 75002
    September-30-2026 | 1,360 sqft | $213/sqft | built 1977 | Similar size (1,360 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $290,000
  • 725 Valley View Dr, Allen, TX 75002
    August-24-2026 | 1,347 sqft | $200/sqft | built 1979 | Similar size (1,347 sqft); Similar age (1979); Sold after the valuation date
    $269,400
  • 547 Northridge Dr, Allen, TX 75002
    September-3-2026 | 1,325 sqft | $230/sqft | built 1976 | Similar size (1,325 sqft); Moderate age difference (5 years older); Sold after the valuation date
    $304,900
  • 625 High Meadow Dr, Allen, TX 75002
    August-27-2026 | 1,352 sqft | $218/sqft | built 1977 | Similar size (1,352 sqft); Moderate age difference (4 years older); Sold after the valuation date
    $295,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Collin Central Appraisal District. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 9.6% in 2026 from 2025.

Appraised value by tax year, with the change from the previous year listed
Tax yearAppraised valueChangeChange %
2026$321,831+$28,220+9.6%
2025$293,611−$10,512−3.5%
2024$304,123−$11,894−3.8%
2023$316,017+$61,753+24.3%
2022$254,264+$34,776+15.8%
2021$219,488+$27,164+14.1%
2020$192,324——
6-year total+$129,507+67.3%