Renewed increase in housing cost (9)
I believe the answer is:
resurgent
'renewed' is the definition.
(thesaurus)
'increase in housing cost' is the wordplay.
'increase' becomes 'surge' (surge is a kind of increase).
'in' indicates putting letters inside.
'housing cost' becomes 'rent' (cost of renting a house).
'surge' going within 'rent' is 'RESURGENT'.
(Other definitions for resurgent that I've seen before include "given new life" , "making comeback" , "Reviving after a lull" , "Coming back to life" , "rising again" .)