The construction industry is in constant development and is currently in a transition period from traditional planning carried out in 2D format to a predominantly digitalizedplanning in 3D. Previous research shows that this leads to varying ways of saving and managing building information. This, in turn, creates difficulties in communication between various construction actors as transfer between different information formats runs the risk for information losses. A critical part in renovation, remodeling and extension projects is the handover of As-built documents to various phases, where information losses can occur. The purpose of the study was to examine the communication around project information, from the production of existing As-bui...