1. Senior Lecturer, School of Built Environment, Massey Univ., Auckland 0745, New Zealand (corresponding author). ORCID: .
2. Project Manager/Quantity Surveyor, McAuliffe Builders Ltd, Level 1, 142 Broadway, Newmarket, Auckland 1149, New Zealand.
3. Associate Professor, School of Construction Economics and Management, Univ. of the Witwatersrand, Johannesburg 2000, South Africa. ORCID: .