How Do I Know If I Have Mold in My Home?
Mold doesn’t always show itself in obvious ways—but knowing the signs can help you catch a growing problem before it becomes a health hazard. If you’ve been asking yourself, “How do I know if I have mold in my home?” here are the 6 signs to look for:
1. That Musty, Mildew-Like Smell
One of the most common giveaways is a musty odor. It’s that earthy, damp smell that often lingers in basements, bathrooms, or closets. You might get used to it and stop noticing—but guests probably won’t. If you smell something funky, don’t ignore it.
2. Visible Spots or Stains
Mold growth can appear in many colors—black, brown, green, or even tan. Look for discoloration on ceilings, walls, clothing, shoes, or even furniture. If you see splotches that won’t wipe away, especially in humid areas like bathrooms or near AC vents, it’s time to take a closer look.
3. Water Damage or Stains
Even if you can’t see mold, water stains or signs of past leaks are red flags. Mold thrives in dark, hidden places—behind drywall, under sinks, inside cabinets—especially where water damage has occurred.
4. Bathroom Trouble Spots
Showers and tubs are hotbeds for mold growth. If you notice dark spots forming in the grout, caulk, or corners of your shower, it could be more than just soap scum.
5. Moldy Food More Often Than Usual
If you’re tossing out moldy food frequently—even food that was bought recently—it could point to a hidden mold problem. Mold spores in the air may be settling inside cabinets or pantries.
6. Feeling Sick More Often
Mold can trigger or worsen health issues. A weakened immune system, frequent colds, fatigue, allergies, skin rashes, sore throats, or asthma flare-ups may all be signs of exposure. Mold produces toxins that can build up in your body over time, especially in sensitive individuals.
Mold Hides in Surprising Places
Even if you don’t see it, mold can be lurking in AC vents, behind walls, inside closets, or in your shoes and handbags. It loves moist, undisturbed areas—and it doesn’t need much light to grow.
What Should You Do Next?
If you recognize any of these signs, it’s a good idea to consult a mold inspection professional. They can test your air and surfaces to confirm if mold is present—even if it’s hiding behind the walls.
Still wondering, “How do I know if I have mold in my home?” Trust your nose, eyes, and body. If something feels off, there’s a good chance mold may be the culprit. Don’t wait—mold doesn’t go away on its own. If you need more information about mold visit our FAQ page or CDC.Gov.
