Data-Driven Due Diligence
Ghost Permits & Hidden Additions: Why Renovation History Can Make—or Break—Your Closing Table
Quick Stats • Up to 45 % of major U.S. remodels never pull the required permits (NAHB survey). • Mortgage underwriters flag unpermitted square-footage as a “collateral defect,” stalling—or canceling—funding in 24 % of disputed appraisals (Fannie Mae QC data). • Average cost to retro-permit a non-conforming addition: $8,500 – $27,000