noun
next door but one; two doors down
Refers to the house or building that is one removed from the immediate neighbor; literally 'the neighbor with one house in between'.
彼は一軒置いて隣に住んでいる。
He lives two doors down.
一軒置いて隣の家が火事になった。
The house next door but one caught fire.
Compound of 一軒 (one house), 置いて (having placed/left), and 隣 (neighbor), literally 'the neighbor with one house placed in between'.