Alexander Owen Architecture has added a marble-clad extension and garden room to this Victorian mid-terrace in East Dulwich, London, to accommodate a home office and a well-stocked bar. The owners, a couple with three young sons, wanted a place to entertain and ample space to spend time together as a family. Top image: the garden room houses a bar and home office. Above: the kitchen extension looks out at the garden and annexe In response to the brief, the architects created a single-storey rear extension that adds 13.3 square metres and accommodates an open-plan kitchen, utility room and toilet, plus a 16-square-metre annexe that serves as a work and social space.