Specifics of system of external influences on the life cycle of a construction object

There is a very important issue today which includes the harmonious and effective development of the system ‘man–environment’. Construction is a branch of material production, which has a significant negative impact on the world around us. It is necessary to plan and operate processes of construction at all stages of the life cycle of a building without exception, to prevent of ecological threats. The article describes the concept of ‘life cycle’ as applied to various fields of knowledge, analyzes existing in the scientific literature division of the life cycle of buildings in the periods, proposes own approach to the division of periods of the life cycle on the basis of resource-saving. The article proposes the creation of a unified organizational system for the effective management of all periods with the constituent phases and formulates the main external influences on the building life cycle