Methodical approaches to the analysis of the efficiency of fixed assets use in building organizations on the basis of economic-mathematical models are offered. The sequence of calculations of analytical indicators of the main means of resources, which allows to obtain a reliable assessment of their effectiveness, is developed. The composition of factors and reserves for increasing the efficiency of the fixed assets use is revealed and specified, that will enable to raise the return on assets and profitability of building organizations fixed assets.

Introduction. The expansion of the areas of enterprise activity contributed to the formation of a new concept of management, which was called project management. The necessity and expediency of the development of this direction of the company’s activity as project management is caused by the growth of the scale and complexity of projects, the strengthening of requirements for the terms of their development, implementation and implementation, optimization of the use of material, financial and human resources, the quality of work and final results.Goal. Сonsists in the theoretical-methodical substantiation of the concept of investment design and assessment of the factors of formation of the economic efficiency of projects at the enterprise.Research methods. In the research process, general scientific and special methods of cognition were used: analysis and synthesis, theoretical generalization and formal logic, system approach, classification, statistical analysis, generalization, observation, mathematical statistics, modeling, specification, technical and economic calculations.Results. It has been found that the real organizational and technological norms of work performance determine the discrete nature of the «time-cost» dependence. It has been proven that the minimum amount of funding is achieved when all project works are performed with the minimum duration (maximum intensity) at certain stages. It is estimated that the performance of works that ensure the minimum amount of funding corresponds to the minimum term of the project. These results form the basis of the proposed methodology that maximizes investment efficiency.Perspectives. The perspective is seen in the spread of the design concept at the stage of calendar planning, where there is a need to optimize the estimated production terms, which will act as a significant lever for increasing the intensity of the execution of individual works, which are accompanied by their increase in cost at various stages of the execution of works, taking into account risk and uncertainty factors.