In conclusion, school buildings in NZ are in need of sustainable refurbishment to meet requirements of the National school buildings strategy and sustainable development. Previous studies in the past five years provide practical lessons in methodology, data collection, decision-making framework, planning, and implementing, which can assist stakeholders of schools in developing a sustainable refurbishment plan and strategy of school buildings in NZ. Regarding sustainability, environmental impacts can be assessed by LCA tools, while life-cycle cost of the projects can be calculated by LCC analysis. The social aspects should not be neglected in further research. Besides, 3D laser scanning and BIM in refurbishment can benefit the school buildings refurbishment projects in NZ in ways of building survey and information management for future works.
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1
Introduction
Cost management is widely accepted as a vital part of project management (El-Karim, Nawawy, & Abdel-Alim, 2017). A rigorous measurement of cost performance is likely to enhance the implementation of the cost management methods and improve the confidence of clients about their investment in the building projects. The identification of key influencing factors is a critical first step in developing a proper cost measurement framework (Olawale & Sun, 2010). This study aims to identify the key influencing factors of building development cost in New Zealand for improving project cost performance.
The building development cost for a building project is impacted by many factors and is usually linked to several aspects of the project, for example, organisation, industry, and the economy. Very few studies about the identification and evaluation of the influencing factors regarding building development cost have been conducted in the last decade.
To achieve the margin expected from any building construction project, it is necessary to have control of the influencing factors that significantly affect the cost of a building’s development. The objective of this study is to identify and rank the relative importance of those influencing factors as perceived by clients, consultants, and contractors as they impact building development cost in New Zealand.