The Scottish Parliament building has emerged as an early favourite, one of construction's most high profile projects in recent years.
'Enric Miralles' and RMJM's contentious parliament in Edinburgh
The other candidates are:
Zaha Hadid's BMW Central Building in Leipzig
Bennetts Associates and Lomax Cassidey & Edwards' Brighton Library
Alsop Design's Fawood Children's Centre
O'Donnell + Tuomey's Lewis Gluckman Gallery in Cork
Foster and Partners' offices for motor racing team McLaren
The winner will be announced at an awards night held in Benson and Forsyth's National Museum of Scotland extension on 15 October.