Make concrete in Israel, building side of edifice (7)
I believe the answer is:
realise
'make concrete' is the definition.
(I've seen this before)
'israel building side of edifice' is the wordplay.
'building' indicates anagramming the letters.
'side of' says to take the initial letters (the letter from one side of the word).
The initial letter of 'edifice' is 'e'.
'israel' with letters rearranged gives 'realis'.
'realis'+'e'='REALISE'
'in' is the link.
(Other definitions for realise that I've seen before include "Come to understand - see liar (anag)" , "Achieve; turn into cash" , "Make concrete" , "Ears lie (anag.)" , "Convert assets into cash" .)