Portable Site Office is a robust and sturdy portable space that is used as a semi-permanent structure to build offices on mining sites, construction sites, and other industrial sectors. The offered structure is fabricated by using premium quality mild steel and aluminum that give high strength and rigidity to bear harsh working conditions on industrial sites. Portable Site Office is provided with insulations which help to provide a comfortable interior environment. Portable Site Office is highly economical as compared to traditional permanent structures. It is provided with a steel window to maintain proper ventilation within the cabin.