Relatives like housing free (7)
I believe the answer is:
aunties
'relatives' is the definition.
(auntie is a kind of relative)
'like housing free' is the wordplay.
'like' becomes 'as'.
'housing' means one lot of letters goes inside another.
'free' becomes 'untie' (I've seen this before).
'as' enclosing 'untie' is 'AUNTIES'.
(Other definitions for aunties that I've seen before include "Female relations" , "Parent's sisters (informal)" , "some women in family" , "Female relatives" , "Females relations" .)