Driving Forces Behind Whole-Process Engineering Consulting Competitiveness Based on AHP-ISM Method

Modern construction projects face persistent challenges with cost overruns and fragmented management across disconnected service phases. Whole-Process Engineering Consulting (WPEC) addresses these issues by integrating investment decision-making, design, supervision, and cost management into a unified delivery framework. Therefore, this study aims to develop a WPEC competitiveness influencing factor system to identify the key influencing factors and the impact pathways. Firstly, a WPEC competitiveness framework comprising five dimensions and 28 factors is developed. Secondly, the Analytic Hierarchy Process (AHP) is applied to calculate factor weights based on 225 questionnaires. Then, the multi-level structural model is constructed based on Interpretative Structural Modeling (ISM) to identify the critical impact pathways. Finally, BZ Consulting Enterprise was selected as a case study to verify the rationality and practical value. The results show that the Corporate Full-Service Consulting Capability and Corporate Foundational Resources are identified as the core pillars, in addition to highlighting three key pathways—resource-integration drive, legacy-capability transfer, and service-awareness transformation—all of which link foundational drivers to market performance. Theoretically, this study introduces a systematic analytical framework for WEPC by mapping its competitiveness factors into the multi-level structural model. Practically, it enables enterprises to assess their transition readiness and formulate targeted strategies to secure a sustainable competitive advantage in the integrated consulting market.