In this article the analysis of constructive and technical features of quickly erected buildings of panel type developed in the 70th years waspublished. Shortcomings of considered designs wererevealed. Elimination of shortcomings was solved due to improvements in existing series of quickly erected buildings and use of lightweight nanomodified concrete in bearing elements of designs. Use of a new material allows decrease in a body weight of bearing designs, change of a form of section of a design and elimination of "the cold bridge".