A home inspection can reveal important mold red flags, but not every mold problem is visible. Musty odors, stains, warped flooring, damp basements, plumbing leaks, HVAC smells, and signs of past repairs can all point to possible hidden mold. This guide explains the biggest mold warning signs buyers, sellers, and homeowners should watch for during a home inspection, why some issues are easy to miss, and when mold dog inspections can help locate mold odor behind walls, under flooring, inside cabinets, or near HVAC-related areas.