Non-utilization of design evaluations can usually be attributed to (a) misidentification of the major decision-makers and information users (b) lack of genuine collaboration between evaluators, decision makers and building users in focusing on evaluation questions, data collection and interpretation and in the dissemination and use of the results. A number of case studies are used to illustrate some of the conditions under which utilization does and does not reliably occur. Most of the studies do not involve architects during the evaluation process. Mention is therefore made of the empoweritent function of evaluations for clients who must (a) deal with decision makers who control the funding and/or (b) prepare a brief for and work closely with architects.