Excess moisture is the primary cause of mold growth in homes. Mold requires both a food source like wood or drywall, as well as a source of water or moisture to grow. By eliminating sources of moisture through preventative maintenance and repair of water leaks and intrusions, mold growth can be prevented. A thorough home inspection can help identify potential moisture problems. While mold issues may be remedied without major costs in many cases if the affected area is under 10 square feet, a professional should be consulted for remediation of extensive mold problems or if specific health concerns exist.