A casualty loss may occur as a result of a flood, hurricane, tornado, mudslide or other natural disaster. The intuitive thought pattern is: “My apartment complex worth $5,000,000 suffered major damage totaling $1,500,000 for repairs and rent loss. Fortunately, I was completely covered for both physical damage and rent loss, other than a small deductible. There is clearly no casualty loss I can claim as a tax deduction, right?”