The urgency to enhance building project delivery has driven the built asset industry to develop innovative methods for design and construction. Among these approaches, the Integrated Design Process (IDP) has gained significant attention. IDP seeks to harness the capabilities of a multidisciplinary team to optimize project efficiency and resource utilization. While IDP has demonstrated promise in reducing waste, its capacity to address other value delivery aspects has not been tackled, among them the alignment with user needs. This paper presents preliminary findings from a constructive design research study that investigates the integration of IDP with complementary methodologies, including Lean-Led Design (LLD) and Target Value Delivery (TVD). Focusing on the initial phase of large-scale complex projects in Quebec, Canada. The research conducts a comparative analysis of IDP as a standalone process versus its combined application with LLD. Preliminary results show a better alignment with the functional requirements of the organization and its users when IDP is coupled with LLD. This synergy has the potential to enhance project delivery by harmonizing design and construction processes with user needs, expanding the scope of value delivery beyond waste reduction.