Judicial appraisal of construction projects refers to the activity in which appraisal institutions and appraisers who have obtained relevant qualifications for judicial appraisal of construction projects in accordance with the law are entrusted by judicial or arbitration institutions to use knowledge and technology in the field of construction, refer to relevant standards and specifications, to appraise and judge the quality of construction projects and their related professional issues involving litigation activities, and provide appraisal opinions. Judicial appraisal of construction project quality includes quality appraisal during the construction phase, existing construction project quality appraisal, construction project disaster damage appraisal, and other special quality appraisals of construction projects (including building leakage appraisal, assessment of damage or impact of surrounding environment on construction projects, etc.). The main procedures of judicial appraisal are: commission acceptance (determining the scope of judicial appraisal), signing of judicial appraisal agreement, on-site investigation and testing by judicial appraisers, and the presence of relevant personnel to make judicial appraisal conclusions through analysis and calculation (as the basis for the court or arbitration commission to hear the case).