This Guide aims to provide advice to practitioners, developers, building owners and local authorities regarding the application of the Building (Scotland) Regulations 2004 to the conversion of traditional buildings. Its function is to support existing Technical handbooks by identifying and resolving typical areas of difficulty that may be encountered during the conversion of such buildings. Part 1 sets out the principles which underlie the guide giving details of aspects such as what makes a building significant, issues surrounding performance of traditional buildings and a summary of key legislation affecting such buildings. Part 2 covers the application of the Standards that are most likely to have an impact on traditional buildings giving the text of each standard, a commentary of potential influences of the standard on traditional buildings, identifies risks from the standard to the building and recommended approaches to meeting the requirements of the standard.