An uninhabited place has nobody living in it. It is a plain statement of fact, with no judgement in it — the place may be beautiful and perfectly pleasant, it simply has no residents. It goes most naturally with islands, valleys, deserts, planets, and stretches of coast: an uninhabited island, an uninhabited part of the country. Notice that it means nobody lives there permanently. Tourists may visit an uninhabited island every weekend; it stays uninhabited, because nobody sleeps there year after year. For buildings we usually prefer 'empty' or 'unoccupied' — 'an uninhabited house' is understood, but it sounds a little grand or literary, and can suggest the house has been standing empty for a long time. Keep it clear from its cousin uninhabitable: uninhabited says nobody does live there; uninhabitable says nobody can.