Capital construction of residential buildings for the purpose of subsequent rent is gaining more and more widespread in the western countries. In Russia, in particular in St. Petersburg, this form of business is just emerging. Due to relevance of this industry, the question of selection the most suitable site for construction arises. The article proposes the solution site-selection case basing on existing methods of territorial analysis, as well as provides examples of application of the obtained databases in the conditions of a narrowly formulated problem. The main tools in the analysis are the calculations of the shares of employment, location quotient and the Hirschman-Herfindahl Index. The mechanisms of solving three types of problems are given, depending on the nature of the input information due to the study of the correspondence between the properties of the object under construction and the urban territories. The theory is formulated on the example of a large city Saint Petersburg and is more suitable for large agglomerations with a population of more than a million people