Place of business (6)
'place of business' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for premises that I've seen before include "Assumptions" , "Buildings occupied by businesses" , "Business buildings" , "Building, place of business" , "establishment" .)
'place of business' is the definition.
(office is a kind of place of business)
This is all the clue.
(Other definitions for office that I've seen before include "Post - bureau" , "Place to perform clerical tasks" , "Business premises" , "Workplace for clerks" , "Firm" .)