Not much is known about the house, the only interior parts were shown are the living room.
The outer field has a barn, showing that its part of a farm. Behind the house has a swing set. Also, there's a cornfield across the road.
During the credits, the rest of the interior were shown; the kitchen, Penny's room, it also showed Rhino opening a closet door filled with instruments. And, its not shown, its implied that Penny's mom has a room of her own.