This thesis addresses an intergenerational multifamily housing proposal with energy-efficient, sustainable, and affordable housing solutions on Bowen Island, Vancouver. The importance of this topic lies in the necessity to balance environmental responsibility with the socio-economic realities of housing accessibility. Bowen Island, with its particular population demographics and environmental context, serves as the focal point for this study, as one of the main objectives of this thesis is to find an affordable housing solution for the needed population, from young, post-parental families, empty nesters and elderly people.