Analysis of factors affecting the performance of Design-Build (DB) projects

Abstract

This study analyzes the key factors affecting the effectiveness of Design-Build (DB) project delivery in Ho Chi Minh City, Vietnam. Using a purposeful sampling method, data were collected from 155 experienced construction experts. By applying Cronbach’s Alpha reliability tests, exploratory factor analysis (EFA), and descriptive statistics, the study identified six main factor groups influencing project performance, including: contractual framework, designers' experience, contractors' capabilities, client roles, project communication, and local characteristics, accounting for 62.6% of the data variance. Among these, factors such as design standards, information communication,stability in ownerrequirements,psychology of reluctance to change in project delivery, and evaluation of design drawings were considered the most significant. The research highlights the necessity of improving professional competencies, enhancing legal frameworks, promoting group communication, and effectively managing local factors inDB projects. However, this study is limited to small-scale civil projects and employs a non-probabilistic sampling method. Future research should expand the sample size, explore tailored contractual adjustments, and test the model with larger and more diverse projects.