Floating Sunroom

A Cantilevered Corner Sunroom for Everyday Living. Before: the rear of this home didn’t earn its keep. The garden was there, but the house didn’t properly engage with it - limited light, limited access and that familiar feeling of being indoors looking out, rather than living with the outdoors. The clients (a professional couple with 3 children) wanted an additional everyday living space that felt calm and contemporary, but still sat naturally with the existing house. It needed to be genuinely comfortable year-round too, not a chilly “summer room” that becomes storage by October. Solution: we designed a compact extension with one bold move: a fully glazed, cantilevered corner with no visible support, creating the illusion the room is floating into the garden. That single detail does most of the heavy lifting - panoramic views, a stronger indoor/outdoor connection, and a space that feels larger than its footprint. Overhead, a flat roof lantern brings daylight deep into the plan, keeping the room bright even on dull days and giving the ceiling plane a clean, architectural “lift”. Behind the scenes, this is where the “simple” extensions usually get complicated. The corner needs concealed structural steel, tight coordination with the engineer and careful detailing to avoid cold bridging. Add in flat-roof junctions and rooflight waterproofing and the success of the project lives or dies in the details - not the concept sketch. Externally, we kept the palette minimal: slim-profile aluminium glazing and a buttermilk K-rend chosen to tie back to the tones of the existing house window surrounds. The result is contemporary and sophisticated. After: the home gained a light-filled, everyday room that works for relaxing, entertaining and simply watching the seasons change - while finally making the garden feel like an extension of family life rather than a separate zone.