Start with basic math: divide the total price by square footage to get the cost per square foot. For high-end remodels, expect $300-$350+ per square foot depending on finishes. Use AI tools like ChatGPT or Grok to verify individual line items — ask what typical costs are for drywall, electrical, etc. Also check overhead percentages; luxury remodelers typically run 18-33% overhead, with Kingdom & Co. at approximately 21%.