LEAN RENOVATION - A CASE STUDY OF PRODUCTIVITY, FLOW, AND TIME IMPROVEMENTS

Abstract

Renovation is a particular branch of construction where the production condition is more chaotic and complex than new build. Nevertheless, renovation as a production system has attained less focus than other project types in the Lean Construction community. Moreover, renovation is a significant driver for the green transition. Thus, knowing how to enable high-performing renovation projects is essential to disseminate both in academia and in the industry. This industrial paper documents the improvement and turnaround of a renovation project faced with cost and time overruns. The case was changed by implementing first the Last Planner System and daily huddles meeting, and later extending with the implementation of Location-Based Scheduling and a developed concept of visible site management. The entire transformation was monitored as productivity data were collected longitudinally during three years. The result was a productivity improvement of 54%, achieved even though the contractor capitalized on the productivity improvement by reducing the on-site workforce by 25% and still manage to complete the project one month ahead of the deadline.