My wife started going to a christian fellowship some years ago. They started out as a store front in a dying mall and today they've bought the mall and have expanded to >5000 members. Christmas and Easter services are either held at the college sports arena or at the sanctuary over several days.
Sounds similiar to my current Church.
Started in people's homes. Eventually expanded to a small building, then leased an old store front. Expanded to offer coarse studies. Now in the process of raising funds to build a Church to accomdate the growing congregation.