1. Lecturer, Quantity Surveying and Associate of Centre for Low Impact Buildings, School of Energy, Construction and Environment, Coventry Univ., Priory St., Coventry CV1 5FB, U.K. (corresponding author).
2. Chair Professor and Head, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Hong Kong.
3. Senior Lecturer, Dept. of Building Technology, Kwame Nkrumah Univ. of Science and Technology, Kumasi, Ghana.
4. Professor, Faculty of Technology Environment and Engineering, Birmingham City Univ., Birmingham B4 7BD, U.K.
5. Project Analyst, PPP Advisory Unit, Ministry of Finance, Accra, Ghana.