Adoption levels of green design strategies in coastal high-rise residential developments in Lagos, Nigeria
Résumé
Introduction Coastal high‐rise residential developments face growing climate‐related risks such as sea‐level rise, flooding, extreme wind and thermal stress, necessitating adaptive, climate‐responsive design. Green design strategies such as passive design measures and active/energy‐related systems are widely recognised as important in addressing these challenges, yet a gap remains between awareness and implementation in high‐rise developments, particularly in the Lagos, Nigeria coastal context, where technical, economic and regulatory restrictions act as barriers to adoption. Methods Using a structured occupant survey of 410 residents and an independent observation checklist administered across six coastal high‐rise developments in Eko Atlantic City, Lagos, this study evaluated and compared implementation of green design attributes at the item and building level. In response to a prior request for inferential testing, a reliability and factorability diagnosis of the occupant‐survey composite scales was also conducted, using Cronbach’s alpha, Bartlett’s test of sphericity, KMO sampling adequacy, and an exhaustive pairwise item‐correlation search. Results Implementation varied across attributes, with passive design and general building information features scoring higher and more consistently than active/energy‐related systems and building‐performance attributes, which varied more widely across buildings. The reliability diagnosis showed that no coherent composite construct exists within the current instrument; a supplementary one‐way ANOVA by floor level is reported for completeness, but its null result is not interpreted as substantive given this limitation. Discussion Factors reported in the literature as linked to green design adoption — including cost, stakeholder priorities, and regulatory regimes — are discussed, while noting these were not tested against this study’s own data. The study’s primary contribution is context‐specific, item‐level and observation‐based empirical evidence on green design adoption in the Lagos coastal high‐rise residential sector, together with a transparent, fully diagnosed account of a survey‐instrument reliability limitation intended to inform future instrument design.
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