Englis: The main purpose of construction project briefing is to effectively transform the needs of the client from an abstract form into a concrete form. Research indicates a clear link between effective briefing and client satisfaction with their resultant buildings. This article documents the findings of a study concerning the effectiveness of construction project briefing as an interpersonal communication process. A case study approach was adopted. The sample included clients, building users, architects, quantity surveyors and project managers. The main finding was that there are no methodical procedures in place in the early stages of briefing. Conceptually, the various project participants were found to have a generic understanding of what ought to be included or excluded from briefing and debriefing, but there appears to be significant gaps between theory and practice.