Abstract: Residential wood home structures are evaluated and classified according to a defined risk level relative to damage likely to be caused by earthquake shaking or wind forces. Susceptibility to damage is evaluated and predicted by a probabilistic software engine based on existing databases of geologic and/or wind data coupled with specific structural characteristics information obtained by an onsite inspection of the structure. The software engine combines these data sets, and produces a report with a reliable, quantified risk rating that can be used by insurance companies to make decisions regarding offering of insurance and rates of insurance. The report is also used by homeowners as an evaluation factor in deciding to strengthen the structure against earthquake and/or wind storm damage.