Group houses are becoming popular — again — among some single baby boomers, and not just for financial reasons. Marianne Kilkenny (second from right) shares her home in Asheville, N.C, with four other people.

Group houses are becoming popular — again — among some single baby boomers, and not just for financial reasons. Marianne Kilkenny (second from right) shares her home in Asheville, N.C, with four other people.

Group houses are becoming popular — again — among some single baby boomers, and not just for financial reasons. Marianne Kilkenny (second from right) shares her home in Asheville, N.C, with four other peo