My House has a Wall

Welcome to my house My house has a wall It goes up up My house has a wall It goes up up The wall goes up up The wall goes up up My house has a floor It goes down down My house has a floor It goes down down The floor goes down down The floor goes down down The wall goes up up The wall goes up up My house has a fence It goes round and round My house has a fence It goes round and round The fence goes around and round The fence goes around and round The floor goes down down The floor goes down down The wall goes up up The wall goes up up My house has a door It goes open shut My house has a door It goes open shut The door goes open shut, The door goes open shut, The fence goes around and round The fence goes around and round The floor goes down down The floor goes down down The wall goes up up The wall goes up up My house has a window Let's all say Hello Hello My house has a window Let's all say Hello Hello Say it high Hello Say it low Hello Say long Hello The door goes open shut, The door goes open shut, The fence goes round and round The fence goes round and round The floor goes down down The floor goes down down The wall goes up up The wall goes up up And there's a roof on top! What does your house have?