CHAPTER ONE INTRODUCTION 1.1 Background A completed building with its facilities and services must be fit for the purpose. Meaning that it should be able to perform its functions in a manner that will ensure satisfaction to its occupants (Ilesanmi, 2010; Hinde, 2012). Although buildings are constructed for different purposes (housing, school, health, etc.), their performance either excellent or poor can be seen from the eyes of its users (Ilesanmi, 2010; Jiboye, 2012). The design quality of a building have been found to influence its functions (Haciric, 2008; Ibrahim, 2011; Jiboye, 2012). For example, a well-designed school has shown to improve the teaching and learning process of teachers and students thereby improved educational achievements (Khan and Kotharkar, 2012; Khalila, Kamaruzzamanb, Baharumb, and Husina, 2015). Also, a well-designed hospital has shown to help in quick patients’ recovery, have positive impact on medical staff and visitors (Abbas and Ghazali, 2010; Ibrahim, 2011; Dandajeh, 2011).