It will be of great significance to promote the development of green buildings,and to establish economic evaluation system for green buildings. In this study,on the basis of the high-rise residential green building project in Hubei province,the cost affecting factors of green buildings are studied. A correlation analysis is conducted to the cost affecting factors with statistical analysis. A multiple regression model is built to assess the "degree of greenness"of buildings based on Green Buildings Evaluation Standard categories. Error analysi...