The paper outlines a decision-support environment that actively supports collaboration during decision making and problem solving. A complementary partnership was formed between computer agents and human agents; one brought selected intelligence to the solution process from “unlimited” multi-domain knowledge sources, the other brought human cognitive rationality. In particular, the proposed system articulated how domain knowledge and know-how can be shared, thereby creating a truly integrated construction team. The author’s investigation measured the views of practitioners in the main building professions—architecture, engineering and construction management—before proposing the decision support system. The conclusion of the work is a conceptual model: a definition of the contractors’ construction management computer agents, and a specification based on scenarios of how these agents would interact with design agents. The significance of Virtual Design and Integrated Project Delivery are also discussed in the context of improved collaboration on the construction project.