Evaluation capacity building (ECB) has become an area in the evaluation field that is attracting both scholarly attention and the practical work of evaluators. Despite some recent contributions, differing conceptions still exist concerning what constitutes ECB, let alone the nature of the capacity being built. Responding to an earlier call on the need for conceptual clarity regarding evaluation capacity (EC), this article discusses a model and a measurement tool used to map EC in Danish public sector organizations. Using empirical evidence as its basis, this article discusses the strengths and limitations of the conceptual model in relation to its face, content, and construct validity. Finally, the article discusses the implications arising from empirical findings and recent theoretical developments and suggests potential steps for improving conceptual clarity in the future. (Contains 8 notes, 1 table, and 4 figures.)