Key factors influencing the decision-making of lump-sum contracting project delivery methods in China

20 factors are selected to frame a primary factor set from 38 factors obtained through literature study. The methods of Mean Score and Ranking Agreement Factor are applied to calculate the sorting order and analyze the consistency of market survey data. The results show that 17 factors concerning owner's engineering capabilities, owner's preferences to project construction, project properties, and lump-sum contracting market conditions exert a profound influence on the decision-making of lump-sum contracting project delivery methods. Finally, countermeasures and suggestions are proposed to promote a rapid and sound development of lump-sum contracting system in Chinese construction industry.