1. Ph.D. Research Student, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom 999077, Hong Kong (corresponding author). ORCID: .
2. Senior Lecturer, Dept. of Building Economics, Univ. of Moratuwa, Moratuwa 10400, Sri Lanka.
3. Student, Dept. of Building Economics, Univ. of Moratuwa, Moratuwa 10400, Sri Lanka.