One's up for living here (4,2,9)
I believe the answer is:
hall of residence
'living here' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'one's up for' is the wordplay.
I cannot really see how this works, but
an anagram of 'for' is 'ofr' which is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for hall of residence that I've seen before include "university accommodation" , "student accommodation" , "student digs" , "place at university" , "College living quarters" .)