1. Ph.D. Candidate, Dept. of Building and Real Estate, The Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong. E-mail: ms.ann_yu @polyu.edu.hk
2. Professor, Dept. of Building and Real Estate, The Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong (corresponding author). E-mail: bsqpshen@polyu.edu.hk
3. Professor, School of the Built and Natural Environment, Glasgow Caledonian Univ., City Campus, Glasgow G4 OBA, Scotland. E-mail: j.r.kelly@gcal.ac.uk
4. Research Assistant, School of the Built and Natural Environment, Glasgow Caledonian Univ., City Campus, Glasgow G4 OBA, Scotland. E-mail: khu@gcal.ac.uk