4140 Berylline Ln, Prosper, TX 75078

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 75078 and Windsong Ranch Phase 6E assessment pages.

Protest deadline

The 2026 protest deadline was May 15, 2026. The 2027 protest deadline is May 17, 2027. 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 September 27, 2026 against the official source.

Assessment snapshot

These public Denton CAD records highlight what may be worth checking before you file.

• Appraised value per square footThe current public record shows about $186 per square foot before any comparable-property adjustments.
• Nearby comparison areaThis page starts the equity review with public records for the Windsong Ranch Phase 6E neighborhood and ZIP 75078.
• Neighborhood value signalAmong 72 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 -4.2% on average.

Public appraisal comparison for 2026. Prepared October 7, 2026. Appraisal source: Denton Central Appraisal District. Sales data checked in this snapshot: October 5, 2026. Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.