Building planning as well as automation systems engineering involve numerous disciplines participating in a many-phase process. However, the information transitions between these different phases are mostly carried out manually which results in multiple sources of errors. Additionally, information which is already present is repeatedly manually re-entered during the whole workflow. This especially applies for building automation system engineering where on the other hand the majority of necessary information is already generated during the planning phase. To address this issue, this work proposes a workflow of semi-automatable engineering for building automation systems and also management gateway integration.