The objective of this major award is to find the best new building in Scotland. Buildings projects of all sizes and types from all over Scotland will be considered.
The architects of the winning building will receive £25,000, making this the biggest architecture prize in the UK, and one of the most significant architecture awards in the world. In 2004 the prize went to Elder & Cannon Architects for St Aloysius College's Clavius Building in Glasgow.
An RIAS spokesman said the success of the award, and the interest it has generated, reflects the success of the architectural scene north of the border.
'The RIAS Andrew Doolan Award for Architecture has established itself as one of the top architecture prizes in the world,' he said.
'The quality of the buildings that have been submitted over the past three years show what an incredibly exciting time this is for Scottish architecture. For such a small country, Scotland is definitely punching above its weight,' the spokesman added.