-There exists many types of different RTLS systems that can be used in the construction sector for tracking people and assets. Previous research showed that such system can be used with success especially during the construction stage of the object. Lean Management is a methodology based on waste reduction in production processes focused on productivity improvement. This methodology is widely used in different sectors, including construction, where it can be effective and results can be visible for all interested involved parties. A goal of this paper is to present RTLS systems used for tracking construction process and with the focus on Bluetooth technology for object tracking. Authors presents the idea of using locating systems for efficiency improvement as a part of Lean Management strategies implementation on the construction site. Discussion is made in the field of construction process showing where they can be used and at what stage in introduction LM strategies RTLS system is most useful. Authors illustrate this idea with the results of the research performed with Bluetooth RTLS system used for tracking objects in the building planned for renovation.