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Purpose. This paper presents the innovative scientifically-based method on efficiency evaluation of the building production management for contracting companies. Otimisation models are substantially aimed at reducing the influence of negative factors and increasing the quality indexes of the organisational process of construction production. Methodology. Methodological approaches of the organisational processes optimisation of construction production are based on the establishment of a well-defined interconnection between the units of the functional structure, the definition of strategies hierarchy of the contracting company.The correlation of duration t and cost c in building production, its influence on the economic appropriateness for projects realisation in civil engineering are analyzed. Findings. Using mathematical analysing methods for cumulative distribution function S(t,c) of two-dimensional random value of construction duration and cost, the basic principles are shown that allow to qualitatively and quantitatively determine the level of influence of the construction market external factors on the implementation of organisational processes in the construction industry, in which a large number of forming elements are involved. The implementation of this methodology permits to assess the real state of organisational processes system in building production, its stability, the degree of determinate indicators structuring in a single functional system, to generate an economic justification in complex. On basis of simulation modeling, efficiency of organisational processes system in building production S(t,c) was determined and graphically illustrated. Originality. The results of the present study demonstrate that it amounted to 58.08 % within the established limits of acceptable risk (LAR) between 0.35 and 0.65. Practical value. It has been shown an implementation practicability of using this methodology by contracting companies at decision-making stage for construction projects initiation with determinate indicators of duration Td and cost Cd. The creation of theoretical and methodological foundations for the development of structural efficiency evaluation algorithms for the organisation of construction production will allow to achieve for contractor companies the highest level of competitiveness in the market of construction services.

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Purpose. The issue settlement of building production optimizing for contracting companies is an urgent task and is becoming more acute with regard to the current dynamic transformations in building market in context of Ukrainian regions. Methodology. The leading role of optimization models lies in discretization and modernization to organizational processes of building production for contracting companies, which are the basic structures for delivery of completed building projects. The study focuses on determination of need to optimize building processes and analysis of calculating concept the implementation efficiency of optimization models in contracting company. Findings. It has been considered the current state of domestic building market on the basis of analytical and statistical data; established that conjuncture of building markets has average, mainly low competitiveness indicators, there is a non-rhythmic development and formation of domestic building sector. Originality. Analytical and theoretical foundations were developed for actualization and conceptualization to implementation of optimization models and development of fundamentally new ones. Practical value. The theoretical and methodological foundations of analysis are scientific impetus to the practical formation of innovative approaches to organization of building production at the current stage of building market development in Ukraine.