Look for musty or earthy odors near walls
Check for visible discoloration, staining, or dark spots on paint, drywall, or baseboards
Watch for peeling paint, bubbling wallpaper, or warped wall surfaces
Inspect for water damage, leaks, or past flooding around the area
Feel for damp, soft, or cool spots on the wall
Use a moisture meter to check for elevated moisture levels
Look for condensation on walls, windows, or nearby surfaces
Check for recurring mold growth on nearby surfaces
Remove outlet covers or vent covers to inspect inside with a flashlight
Use a borescope or inspection camera through a small access hole
Examine behind furniture, under windows, and around plumbing lines
Check attic, basement, and crawl space walls for signs of moisture intrusion
Monitor for worsening allergy or respiratory symptoms in the affected area
Hire a professional mold inspector if signs are unclear or widespread