Water Intrusion – Without question the most common defect found in a home inspection is water intrusion. The most common culprits home inspectors look for are permeable roofs and basements, damaged or improper roof construction, missing gutters and downspouts too close to the home’s foundation. While common, homebuyers need to know where and to what degree water has damaged the property because it can lead to more damage like mold and cracks to the foundation.