Abstract
This study examines the architectural integration of Interlocking Stabilized Soil Blocks (ISSBs) and green façade systems to enhance sustainability in hotel design within the tropical coastal context of Lagos, Nigeria. While both technologies have been independently validated for improving thermal performance and reducing environmental impact, their combined application in the hospitality sector remains largely unexplored. Adopting a qualitative multiple case study design grounded in interpretivist philosophy, the research analyzes ISSB-based developments and buildings utilizing green façades through architectural documentation, visual analysis, and comparative evaluation. Findings indicate that ISSBs significantly lower embodied energy and provide high thermal mass, while green façades facilitate passive cooling via shading and evapotranspiration. However, successful integration is hindered by moisture sensitivity, maintenance complexities, technical skill gaps, and socio-cultural perceptions of indigenous materials as "low status". The study proposes a context-responsive framework emphasizing a ventilated double-skin approach, proper surface treatments, and early-stage structural integration. Ultimately, the research contributes to the discourse on Critical Regionalism and Biophilic Design by bridging indigenous material systems with contemporary ecological strategies. It provides practical guidance for architects and developers to reduce the energy intensity of coastal hospitality architecture while fostering a stronger connection between occupants and nature.