Search for experienced contractors. According to the CDC, there is always a little mold everywhere in the air and on many surfaces. The CDC reports that alleged toxic-mold cases are very rare. For many, household molds produce an allergy like symptom. For others, household mold does not seem to bother them one way of the other.
New molds grow naturally in basements and other chronically damp areas such as bathrooms.
They can enter homes through ventilation and air conditioning systems. Mold spores can also gain indoor entry by attaching to clothing, shoes, suit cases, and other convenient vehicles. While mold is unavoidable, by reducing moisture you can at least make your home less mold-friendly. When mold grows out of control, it can create a variety of problems. In 1998, a county courthouse in Florida was the focus of a large indoor air quality investigation which ultimately hinged on mold and fungus that was released into the air.