An Assessment of Sustainable Design Strategies Applied in Selected Mixed-Use Facilities in Lagos State, Nigeria

Abstract

The rapid urbanization in developing nations has intensified the need for sustainable mixed-use developments, particularly in megacities like Lagos, Nigeria. This study assessed the implementation of sustainable design strategies in selected mixed-use facilities in Lagos State, focusing on sustainable site development and energy efficiency measures. The research aimed to evaluate the effectiveness of sustainable design implementations and identify factors influencing their adoption, examining two prominent case studies: Nestoil Towers and Kings Tower in Victoria Island. Using a qualitative research approach, the study employed structured observations, photographic documentation, and architectural documentation review to assess sustainable design features. The findings reveal varying levels of success in sustainability implementation, with energy efficiency measures achieving significantly higher scores (78-85%) compared to site sustainability measures (42-55%). Both facilities demonstrated strong performance in technological integration and innovative design solutions, achieving energy consumption reductions of 27-31%. However, challenges persist in site sustainability aspects, particularly in vegetation preservation and tree retention. These findings provide valuable insights for both new construction and existing building retrofits, informing strategies for enhancing sustainability in current structures through phased improvements, system upgrades, and adaptive reuse approaches. The study recommends enhanced focus on site sustainability measures, integrated design approaches for future developments, and systematic retrofit strategies for existing buildings to improve their environmental performance. These recommendations contribute to the broader agenda of sustainable urban development in developing nations.