Dimensions 6.00 × 4.00 m (24 m²) Construction & Materials External wall build-up (≈155 mm): timber studs (4" × 2"), OSB sheathing, 100 mm stone-wool insulation, and a ventilated cavity for air circulation. Internal partitions (WC and attic wall): double-sided lining with 100 mm stone-wool acoustic/thermal insulation. Flooring: laminate wood (Swiss Krono). Roofing: ArmourShield shingle tiles with full waterproofing. Electrical Internal installation including 4 double sockets, 3 switches, 1 main control panel, 1 heater switch, and a smoke detector. Upgrade provisions for USB outlets and smart switches. LED lighting throughout (interior and exterior). Plumbing & Sanitary Complete internal plumbing installation. Bathroom built with exterior-grade fiberglass-reinforced drywall, full wet-area sealing, and electric ventilation. Sanitary ware installation: toilet bowl, shower enclosure, and sink (all Made in Italy). Joinery & Glazing Aluminium frames (series MU2500) with 28 mm I-PLUS Light double-glazed energy glass. Interior Fit-Out Small kitchenette. Provision for air-conditioning. Additional Elements Wooden deck: 7 m². Attic with partition wall and door as per drawings. Staircase for access to the attic.