Future housing design, with an emphasis on sustainability, flexibility, and mobility, requires a new architectural approach. Climate change, population mobility, and rapid technological developments have rendered traditional housing models increasingly inefficient. As a result, future architecture must be capable of responding effectively to dynamic environmental and social conditions. This research adopts an analytical–comparative methodology, drawing on theoretical studies and a review of international case studies, to extract key principles for the design of sustainable and movable apartment units. The findings indicate that integrating smart technologies, lightweight structural systems, modular housing units, and self-sufficient energy solutions can establish a viable framework for future housing. Such apartments not only achieve environmental sustainability but also provide high levels of flexibility and mobility, enabling adaptation to changing user needs and spatial conditions.