The decision was made following the recent vote of council and was announced yesterday to RIAS council members.
'I am extremely honoured by being elected, and I have my ideas of what needs to be done, and continuing the work set out by Doug,' he said.
'We will be focusing a great deal on communicating with our members, and looking for as much feedback from them as possible.'
Dunn played a big part on the recent roadshows carried out by the RIAS, which listened to the ideas other members had on how to improve the position of architects.
'During my time I want to improve the profile of architects on a business level. To do this we will continue to work closely with the Lighthouse and Architecture & Design Scotland, but try and focus on the business side of things,' he said.
'Other issues we will be paying particular attention to are escalating student fees, and the crippling debts students are having to deal with.
'We will also be looking at the salaries throughout architecture, which are shocking. There is so much to work on, and we need to be getting a bigger slice of the cake,' added Dunn.