This paper refesrs to determination of the regression model of relationship between economic and ecological characteristics of building materials. To achieve this precede theories and research. The work is divided into several parts. In the first part there will be words about statistics, more precisely the part – correlation and regression. It implies meaning, usage, relationships, solutions and analysis. Today, a lot of attention is paid to the assumptions and speculations, so these analyses are great benefit in today's society and business. In order to begin the theory and final arrival till regression modul it's necessary to inform what the word will be. In this case they are building materials. So the second part is devoted to the theory of building materials. Some of the basic materials – wood, metals, polymer materials, concrete – have been processed. The emphasis is on the basic raw materials of each material, the technological process od production, the physical-mechanical properties, the types of materials and their use. Some of the values are shown in a table for easier comparison. After the elaboration of each material, the environmental benefits of the material and their environmental impact are listed. By elaborating part of the theory, the table shows the final materials and their prices and use. Using the coefficient of correlation, the correlation measure of these variables has determined. After determining correlation strenght, a regression model was developed.