Fibre-reinforced plastic, FRP in short, is a composition of a polymer matrix reinforced with fibres. The polymer can be polyester thermosetting plastic, epoxy, vinylester or phenol formaldehyde resins. This composite material forms a major material in the construction of cabins which can be transported to a location, installed, used till the requirement, dismantled and transported to next destination. The FRP material in the construction of cabin adds toughness, water resistance, durability, cost effective installation and easy maintenance features. Not only used as off site functional building, FRP portable cabin can also be an addition to a commercial space. It can be used as kitchen, restroom, enhanced classroom and recreational spaces. The portable FRP cabins are lightweight, strong & flexible, UV resistant, chemical resistant, rust proof, anti-algae and stackable. This modular structure ensures safety and reliability.