The article is devoted to the development of a methodology for preliminary assessment of the geotechnical situation of the site for the reconstruction of construction of unique buildings and structures and its explanation. Was the method of determining the geotechnical category, the complexity of a new building and highlighted the main aspects of the stages of the methodology.

Keywords: geotechnical situation, unique buildings, investment risks, risk category, category of responsibility of an object category of technical condition of foundations

In this article the territory of the city of Rostov-on-Don is considered and engineering-geological conditions for the purpose of construction of buildings and constructions on a monolithic base plate of small laying are analysed. The schedule of dependence of the limit module of deformation on pressure under a base sole is constructed. The analysis of engineering-geological conditions in the city of Rostov-on-Don is made, and also the map and the chart of distribution of the average module of deformation in his territory are made.

Keywords: the average module of deformation, extreme draft of a subfoundation, pressure under a base sole, a monolithic base plate

To preserve the historical integrity of the city it is necessary to use individual approach to reconstruction in strict accordance with the rules of land use and development. Analysis of the housing stock the Central part of the city of Rostov-on-don was produced using data from the monitoring of its technical condition and showed that the Central part of Rostov-on-don residential buildings of old buildings, low rise and an unsatisfactory technical condition, proves the need for a comprehensive reconstruction. Over the past five years in the Central part of the city the construction of high-rise buildings in area of historic buildings, leading to disruption of its historic appearance.

Keywords: reconstruction of the urban environment, the construction of high-rise buildings, the violation of the historic appearance, information-analytical system utilities, GIS database, land use and development