Software product lines in smart buildings involve large feature models in which the variability reflects the instrumentation and composition of the building. Moreover, some variation points must be duplicated on each occurrence of certain elements of the building (e.g., optimisation scenarios dedicated to each room of the building). We propose a model-driven approach to generate and configure feature models specific to a given building. In other ways, a diagram showing only appropriate features for a given building. This paper presents how an infrastructure model (describing a building), and a feature model are transformed to generate a infrastructure-specific feature diagrams.