Ways to increase the industrial housing construction plants competitiveness is shown on the base of the practical examples of professional composite building matrices application. For this purpose the measures taken for expenses and prime costs reduction, in use of the building matrices are described. Economic effects calculations of the building matrices in the facade slabs molding reasonable application are presented using specific practical examples. Substitution of purchased plug-in elements in the enclosing structures production to own manufacture in a factory by the specialized matrices application is a practical way to reduce expenses. In this part, real calculations and practical economic results are also provided. A practical way to achieve a leading position in the industry is given, in times of crisis, taking into account limited demand. This way is to use the large-format architectural elements on facade slabs which molding industrially directly with slab using composite matrices.