Abstract: As sustainability becomes a central point in the conceptual stage and design process in most architectural practice, research on office buildings’ impact on the environment is greatly increasing and gaining high attention around the globe. Although many designers claim their buildings to be sustainable, unless a comprehensive Life Cycle Assessment (LCA) study is carried-out to ascertain the real situation, it is difficult to ascertain the total environmental burden a particular building has on its surrounding and global environment. This paper demonstrates how design policies for adaptability is applied to choose more sustainable materials alternatives during the maintenance (retrofit) phase of the building with an estimated projected life cycle of 50 years.