Temporary housing housing a new occupant (6)
I believe the answer is:
tenant
'occupant' is the definition.
(I know that tenant is a type of occupant)
'temporary housing housing a new' is the wordplay.
'temporary housing' becomes 'tent'.
'housing' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'a'+'n'='an'
'tent' placed around 'an' is 'TENANT'.
(Other definitions for tenant that I've seen before include "One renting property" , "Person renting property" , "holder" , "Rent payer" , "Occupant of rented property" .)