Pecasa Garden Rooms design and build bespoke garden rooms and garden annexes across North London, Hertfordshire, and Buckinghamshire. Their contemporary buildings are tailored to suit a wide range of uses, from home offices and gyms to self-contained living spaces. Using Structural Insulated Panels (SIPs) and a high level of internal finish, Pecasa create well-insulated, year-round rooms. An online design configurator helps clients explore layouts, finishes, and guide prices before moving into a detailed design consultation with their team.