Diagnostic system and method are the risk of miss leasing real estate disclosure. Real estate database; issuing a contract leasing miss input module receives miss leasing contract; is provided geographic area real estate by setting a set geographic area real estate leasing consideration and description description parameters selected for estimating miss variable [hey [hey] nick price model by selecting proper leasing miss estimation model based on proper leasing miss estimation model generates appropriate hazards by estimating miss leasing leasing miss an estimator module; and selecting appropriate for estimating parameters selected inferred real estate transaction description description [hey [hey] nick price model is estimated based on the model variable of the proper transaction generates trading is estimated by paying is inferred estimation model estimator module proper proper trading hazards; smaller than a successful bid for real estate description description [hey [hey] nick price model variable of the selected parameters and selecting the successful bid model based on sequence generates a successful bid by the successful bid rate smaller than a successful bid sequence model estimator module; and successful bid amount calculating module calculates a winning bid to the auction trading a particular rate proper amount; calculating frame residual stored in calculating module from reality winning bid amount remaining; contract until the residual stored in each reduction in the risk of miss leasing contract miss leasing leasing miss and outputs the diagnosis by miss leasing risk module is composed of a substrate.