In December 2017, Adelaide Hills Council completed an Elector Representation Review which is a formal process under Section 12 of the Local Government Act 1999 to review all aspects of Council's composition, including the division, or potential division, of the council area into wards. In reviewing the representation arrangements, in consultation with the community, the Council resolved on a new structure that took effect from the November 2018 Local Government Election.
The new structure is for the district to be represented by a Mayor elected by the community, 12 ward councillors, and the creation of two wards to replace the current five ward structure. The Valleys Ward will be created by merging the existing Torrens Valley and Onkaparinga Valley wards into one ward with five councillors. The current Manoah, Mount Lofty and Marble Hill wards will be amalgamated to form the Ranges Ward with seven councillors with the addition of the Basket Range, Cherryville and Carey Gully localities, which were previously divided by ward boundaries, to be wholly within the Ranges Ward.
A copy of the final Representation Review Report (which sets out Council's preferred representation agreements) was certified by the Electoral Commissioner of South Australia and is available below.