Commercial shade consultant? (7)
I believe the answer is:
advisor
'consultant?' is the definition.
(synonyms)
'commercial shade' is the wordplay.
'commercial' becomes 'ad' (abbreviation for advertisement).
'shade' becomes 'visor' (I've seen this before).
'ad'+'visor'='ADVISOR'
(Other definitions for advisor that I've seen before include "Guide; VI roads (anag.)" , "one counsels" , "consultant" , "Wise counsellor" , "One giving counsel (O, not E)" .)