Abstract
Elements and constructions of building differ in the different degree of complication and vagueness of the technical state, and also far of factors, that result in their physical wear, deformations, defects and damages. Information about the defects of building must be presented as results of inspection and diagnostics. Determination of connection between defects and reasons of their appearance, prognostication of consequences of these defects on the further technical state of object is a multivariable task, that is why needs the detailed study.Defects and damages of building objects are the consequence of negative factors that exist on all stages of life cycle, in this connection there is a task of providing of them service ability by the receipt of information on the technical state, diagnosticating and making decision from renewal. The estimation of the technical state of building is one of the most intricate problems at the market of the intellectual systems of estimation and making decision, complication of that consists in great numbers factors that influence on an estimation, that it is difficult enough to formalize.This study highlights the issues related to the methods of examination and analysis of the causes of damage diagnostics of the technical condition of buildings and structures. The information technology of the decision support system has been further developed, which is based on powerful analytical tools for intellectualization, which allow experts to make more plausible assessments and managerial decisions.