Look for dark green, black, or very dark brown patches
Check for fuzzy, slimy, or powdery growth
Inspect areas with water damage or past leaks
Smell for a strong musty or earthy odor
Look in damp places like bathrooms, basements, attics, and under sinks
Check behind walls, under carpets, and around windows
Watch for discoloration on drywall, wood, or ceiling tiles
Look for recurring mold after cleaning
Test suspicious areas with a mold testing kit or professional inspection
Confirm with a mold specialist if the source is hidden or widespread