The paper discusses the functions and objectives of systems, used for a building’s monitoring process, through the subsequent stages of a building’s service life. The authors present the result of research regarding the monitoring of two buildings undergoing refurbishment: an industrial hall and a multi-storey general use building. Refurbishment of the industrial building included upgrading an existing production line, associated with an increased technological load. In the general-use building the foundations were strengthened in connection with the construction of a new multi-storey building in the immediate vicinity. The process of reinforcing footings, or – pilings – was monitored, as well as the preservation of an existing building, during the course of the construction of the new building.