In the Architecture Engineering and Construction (AEC) sector, cooperation between actors is essential for projects success. During the building construction activity, organization is both hierarchical and adhocratic. Decision assistance tools have to integrate these heterogeneous parameters. The proposition described here consists of the design of a coordination assistance tool providing synthetic indicators on the statement of the activity and also allowing the user to navigate in the cooperative context through multiple views. This proposition is based on a model architecture allowing us to manage cooperative context information and its visualization.