Garden Buildings in Middlesex

How Pecasa Builds Premium Garden Rooms At Pecasa, we design and build high-performance, bespoke garden rooms that are made to last not flat-pack sheds or basic timber cabins. Every Pecasa garden room is engineered for year-round comfort, durability, and modern living. 1. Bespoke Design, Built Around You Every project starts with a tailored design, created around your space, purpose, and style. Whether you need a home office, gym, studio, garden annexe or luxury retreat, we customise the layout, glazing, finishes, and technical specifications to suit your needs. 2. Structural SIPs Construction We build using Structural Insulated Panels (SIPs) the same technology used in modern housing.