Abstract. The BIM technology during her creation has been aimed, first of all, at design and construction branch, but its application in the field of studying and operation of architectural heritage can essentially change and transfer this kind of activity to new qualitative level. The question of effective introduction of BIM technologies at the solution of administrative questions of operation and development of monuments of architecture is considered in article. Creation of the information model of the building object of cultural heritage including a full complex of information on an object is offered: historical and archival, legal, technical, administrative, etc. The 3D model of an object of cultural heritage with color marking of elements on degree of wear and a first priority of carrying out repair will become one of components of model. This model will allow to estimate visually technical condition of the building in general and to gain general idea about scales of necessary repair and construction actions that promotes improvement of quality of operation of an object, and also simplifies and accelerates processing of information and in need of a memorial building assessment as subject to investment.

The article is devoted to evaluation of the possibility of usage BIM for existing buildings. While BIM processes are established for new buildings, the majority of existing buildings is not maintained, refurbished or deconstructed with BIM yet. However, it can play a significant role for better operation and maintenance and building facility management. Research in creating BIM for existing buildings has received growing attention in recent years. The objective of this paper is to explore potential opportunities and barriers in constructing BIM for existing buildings

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The aim of the work is to assess the possibility of underground parking during the reconstruction of objects located in the historical part of St. Petersburg. Using theoretical research methods, an analysis of typical problems during reconstruction with the development of the underground space is carried out, widely used work production technologies are identified, and the experience gained from such construction in St. Petersburg is evaluated. The result of the study was the conclusion about the possibility of constructing in-depth and semi-in-depth parking lots, as well as the reconstruction of existing buildings with underground parking in the central historical part of the city. At the same time, a high probability of significant restrictions or even a ban on reconstruction was noted. In addition, under the constrained conditions of historical development, high-quality, thorough and systematic implementation and monitoring of repair and construction work by professional geotechnicians and builders is required.

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