A method, system, apparatus and computer readable storage medium is provided for taking information related to a specific real property structure, including customer information; information regarding uses of real property (residential, industrial, commercial, living spaces, crawl spaces, etc.); elevation, slope, and grade information; base flood elevation data; flood depth; use of flood mitigation devices (e.g., breakaway walls, flood vents); survey information; the use of design professionals in mitigation of risk; and other matters; and using this information to identify means of reducing risk, including use of, or repositioning of, flood mitigation devices; reinforcement of structures, use of design professionals, and other matters, in order to assess and mitigate risk.The invention also relates to means for quantifying and reducing excess risk coverage premiums for homes not covered by National Flood Insurance Program flood plain insurance, or for excess insurance coverage over minimum required insurance amounts.