1. Doctoral Researcher, School of Engineering, Design and Built Environment, Western Sydney Univ., Parramatta South Campus, Victoria Rd., Rydalmere, NSW 2116, Australia (corresponding author). ORCID: .
2. Senior Lecturer, Dept. of Building Economics, Univ. of Moratuwa, Bandaranayake Mawatha, Moratuwa 10400, Sri Lanka. ORCID: .
3. Professor in Quantity Surveying, Dept. of Quantity Surveying, Univ. of Vocational Technology, 100, Kandawala Rd., Ratmalana 10390, Sri Lanka.