This is a domestic SuDS retrofit to the house and garden office of Bill and Elizabeth Blackledge, directors of 2B Landscape Consultancy. Over the last 10 years, every opportunity has been taken to include water-sensitive design in the development of the plot, for example when dealing with a failing flat garage roof, when designing a garden office, and when adding an extension, to design in retrofit SuDS features. These include: green roofs, water harvesting, rain gardens, permeable paving and a hydration channel. As landscape architects and SuDS advocates, it is important for us to put our money where our mouth is, both to provide a reference for other householders and to learn directly from the installation and use of these SuDS features.