Outside the house; outdoors or outside the premises of a home.
子どもたちは家の外で元気に遊んでいる。
The children are playing energetically outside the house.
冬は家の外に洗濯物を干せないことが多い。
In winter it's often not possible to hang laundry outside the house.
その猫は家の外に出て行ってしまった。
That cat went out of the house.