The £5million makeover set to transform the Union of Students will go ahead as scheduled this November.
The rebuild project aims to provide more space and make it easier for students to get around.
Building work is due to start the third week of November and will continue until August 2010.
Union President Paul Tobin said: “Everything is going ahead as planned and the first work will start on the concourse.”
Former Finance Officer, Alex Pott, who helped plan the redesign, said: “As the best students’ union in the country we need a better building for our students and activities.
Some areas of the Union will be out of use during the works but all services will remain available.
Nigel Hallam, Director of Operations at the Union, said: “There is going to be some disruption for 40 weeks while the work is carried out, but at the end we will have a significant improvement.
“The renovation will bring the building into the modern world.”