This modest extension to a terraced 1930s house in North Dulwich, demonstrates how a property can be radically transformed to create a modern family home. We have obtained planning consent from Southwark and a separate consent from the Dulwich Estates. The new extension is conceived as 2 interlinked boxes, heavily glazed to the rear and above, creating new kitchen, and living space and allowing the rest of the ground floor to work much more efficiently than the current arrangement.