The article looks into virtual units of construction design companies. Challenges in virtual organization of construction design are discussed. Modern society is characterized by transition to informational model of organization. Also, we can talk about environmental engineering, that is, to improve the quality of information environment. New forms of organization can be classified according to such characteristics as scope and nature of the activity, type of ownership, legal status, and size. These forms, along with the virtual organization, include financial and industrial groups, business unions, and clusters. It is accepted to highlight main advantages of virtual organizations in the free choice of high-class resources while reducing time costs.

As of the end of 2017, in Moscow, there are 286 mapped five-story fully-assembled residential buildings of K-7, II-32, II-35, 1605-AM, 1MG-300 series with total area of 1046,7 thousand square meters. They were built at the beginning of the era of mass construction, in 1959 - 1962 years, and were distinguished by thin outer walls of lightweight ribbed expanded clay panels with unstable thermal protection properties. The technologies used in the construction of such buildings do not allow reconstructing them. Nowadays, the task of demolition of the neighborhood of five-storey houses in Moscow with the maximum possible reduction in terms of production of works and the maximum quality of work is very important. It is also necessary to ensure safe work and compliance with all sanitary standards. The order of execution of the works has a mathematical solution method. It identifies issues that arise in the alternating sections performing the process of demolition.