Father erected a porch after fixing driveway, perhaps (8)
I believe the answer is:
approach
'driveway perhaps' is the definition.
'father erected a porch after fixing' is the wordplay.
'father' becomes 'pa' (pa is a kind of father).
'erected' is a reversal indicator.
'after fixing' indicates anagramming the letters.
'pa' back-to-front is 'ap'.
'a'+'porch'='aporch'
'aporch' with letters rearranged gives 'proach'.
'ap'+'proach'='APPROACH'
(Other definitions for approach that I've seen before include "follows drive" , "Advance towards" , "Come near or nearer to" , "Come towards" , "attitude" .)