Abstract: Apparatus and methods relate to applying a condition decay function to a property's initial investment value to generate numerical baseline condition scores for multiple predetermined time increments, and adjusting the baseline condition scores by investment value of property structure improvements occurring during each time increment and scaled according to a statistical distribution of values of property structure improvements to peer structures. Investment values may be calculated per square foot of structure. Investment values of an investment activity may be imputed according to a statistical distribution of investment values of peer structure investment activities. Adjusted condition score values may be scaled to standardized condition score values according to a predetermined quantile shift function for a property's jurisdiction(s). Effective age of a structure may be determined from condition score values.

Abstract: Computer-implemented methods and computer systems for identifying whether there exists building permit information associated with a structure, or for estimating underinsurance of condition of a structure are provided. The computer implemented methods include acquiring construction information on a plurality of structures in computer-readable form and converting the construction information into a standardized database. The construction information may include building permit data including one or more of the number of building permits within a particular time frame, building permit age, building permit category, and job cost. Further, the computer implemented methods may include estimating underinsurance or condition of a target structure based on the construction information.