What 90's Show Is it?

Ok, I remember watching this show when I was young. It's very vague to me, but I remember the show was kids and an adult in somebody's backyard. There was this medium sized dollhouse/playhouse, I think it was homemade but I can't be certain. They would all go into the playhouse and it would randomly grow inside, making enough room for everyone. I can't remember the name, but I do remember it was on the same channel as Barney, I think it came on right afterwards. Can anybody help me find this children's show?