For the first time in Stirling Prize history you the viewer have the chance to vote for your favourite building in the 'people's choice' award.
Kevin McCloud will announce the people's winner live on Channel 4 on 15th October, just prior to the main prize. For the chance to have your say simply call 0901 1191 919.
Calls cost 25p, mobile and other network rates may vary.
The phone line will be open from 8pm Tuesday 11th October.
Lines close just prior to the announcement live on the evening of Saturday 15th October.
Need some help to decide? Take a look at galleries and video tours of each nominee here.