Derrière vs arrière and en arrière

The best way to say it would be: Il est derrière la maison. Derrière is a preposition and that's what's needed here. Arrière alone isn't a preposition, so you cannot say ...arrière la maison. The third option you cite, en arrière de la maison, isn't used in standard French, where en arrière usually stands alone, without a noun. You could say, va en arrière -- go backward, but it isn't used in the way you quote in your question.

Merci. Does the same hold true for other prepositional phrases starting with “en” like en avant, en dessous, en dessus?