Construction of multi-dwelling units is a promising and constantly developing field of activity. To prepare cadastral documentation properly is an indispensable condition for obtaining the commissioning certificate and further registration by the state cadastral authorities. The main concepts of the described field of activity, as well as general contents of technical plan of the multi-dwelling units are considered in the article. Criteria and the problems of drawing up the cadastral documentation are revealed. Currently a technical plan is a necessary document for obtaining permission to place multi-dwelling unit into use. It has to be noted that only authority which has produced such permission is allowed to apply for state cadastral registration of multidwelling unit. The practical aspects of preparation of the technical plan are considered in this article.