dSpace is an open and modular programming framework that aims to simplify and accelerate the development of smart space applications. To achieve this, dSpace provides two key building blocks – digivices that implement device control and actuation and digilakes that process IoT data to generate events and insights — together with novel abstractions for composing these building blocks into higher-level abstractions. We apply dSpace to home automation systems and show how developers can easily and flexibly compose these basic abstractions to support a wide range of home automation scenarios.