Frontage (6)
I believe the answer is:
facade
'frontage' is the definition.
(I know that frontage can be written as facade)
This is the entire clue.
(Other definitions for facade that I've seen before include "Outer surfaces or face as of a building" , "Building frontage, or sort of pretence" , "Front of building or outer appearance" , "ballet" , "Walton's work" .)