(C) All members of the Boston Fair Housing Commission shall be residents of the city at the time of their appointment and throughout their tenure and they shall be deemed special municipal employees for the purposes of M.G.L. Chapter 268A. At least one Commissioner shall be a tenant who, at the time of his or her appointment, shall be eligible on the basis of income for assisted housing in the city. At least one Commissioner shall be an individual regularly engaged in the business of sale and/or rental of residential real estate in the city. At least one Commissioner shall be a member of the Board or a senior administrator of a community-based, non-profit organization in the city which seeks to address the housing needs and issues of its community, and at least one Commissioner shall be demonstrated governmental experience in civil rights.