Framework for Minimizing Design Flaws in Order to Improve Construction Performance and the Maintainability of Building Infrastructure in Delta State

Design flaws in building projects may generate rework, construction delays, additional costs and maintenance difficulties. This study developed a proposed framework for minimising design flaws and improving construction performance and the maintainability of building infrastructure in Delta State, Nigeria. A mixed-methods research design, informed by a pragmatist philosophy and a concurrent triangulation strategy, was adopted. The study population comprised 389 registered architects, builders, quantity surveyors and structural engineers. Total enumeration was adopted for the questionnaire component, and 15 experienced professionals were purposively selected for semi-structured interviews. Questionnaire data were analysed descriptively using mean scores, while interview responses were examined thematically. Design review and quality assurance processes ranked highest, with a reported group mean of 3.42, followed by regulatory frameworks and code compliance (3.41) and Building Information Modelling and digital coordination (3.38). Capacity building and professional development (3.35), post-occupancy evaluation and feedback systems (3.32), and client education and briefing practices (3.29) were also identified as relevant strategies. The findings informed a proposed framework combining design checking, regulatory oversight, digital coordination, professional development, client involvement, implementation support and continuous feedback. The proposed framework provides a structured basis for coordinating preventive measures across project stages. However, the findings reflect professional assessments rather than demonstrated improvements in project outcomes. Empirical application and evaluation are therefore required to determine the framework's feasibility and effectiveness in the study context.