Seniors want to be active participants in their lives and not to live in a state of dependency. Many of them assume a caregiver role, at times experiencing difficulty, particularly when they or their spouse are living with significant and persistent disabilities. Their participation is greatly facilitated in a context where physical and human environments are organized to take into account characteristics of the aging process and the role of seniors living at home. At the least, this is what can be expected if we develop appropriate housing for senior couples experiencing a loss of autonomy within the framework of an adapted multi-unit apartment building, a type of "solidarity cooperative", organized in a manner which allows seniors to continue assuming their roles and to feel useful, whatever their level of autonomy. The emergence of such a structure is based upon local initiatives supported by local organizations within the territory and by municipalities. To make such projects a reality in the future, promoters must be accompanied by groups of experts, while the sustainability of these cooperatives calls for the development of regional federations of cooperatives. Public resources become essential and complimentary partners in support of the autonomy and the role of senior citizens, helping to support their caregivers in respect of their desire to live at home together... for life.