This study is focused on the scientific management of defects in the apartment housing and on building the foundation of the reasonable quality management through it, analyzing the influence of each factor on defect occurrences and the correlation between the factors and the occurrences, predicting the frequency of the occurrences due to the elapse of year. It is verified in the study how the factors influence on defect occurrences by the elapse of the year and how is the degree of the confidence level through the statistical procedure, surveying and analyzing the frequency of the occurrences after sorting them by the elapse of year.
