Hire in Brentwood (4)
I believe the answer is:
rent
'hire' is the definition.
(I know that hire can be written as rent)
'in brentwood' is the wordplay.
'in' indicates the answer is hidden within the clue.
'RENT' is hidden within 'brentwood'.
(Other definitions for rent that I've seen before include "Payment for lodging etc" , "One due a letter" , "Torn, due to landlord" , "Let out - torn" , "Payment for accommodation - that's torn it" .)