Notice gong in brick building (5)
I believe the answer is:
adobe
'brick building' is the definition.
(I've seen this in another clue)
'notice gong' is the wordplay.
'notice' becomes 'ad' (short for advert).
'gong' becomes 'obe' (Order of the British Empire award or 'gong').
'ad'+'obe'='ADOBE'
'in' acts as a link.
(Other definitions for adobe that I've seen before include "Mexican mud and straw brick, and the hut made of it" , "Clay dwelling" , "Clay for mud bricks" , "house" , "Sun-dried brick clay" .)