In one's own house (2,4)
I believe the answer is:
at home
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in one's own house</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for at home that I've seen before include "In (for a party?)" , "ready to receive visitors" , "Reception in one's own abode" , "Where one lives" , "In one's own house" .)