Section 106 agreements are legal agreements between a planning authority and a developer, or undertakings offered unilaterally by a developer, that ensure that certain extra works related to a development are undertaken. They are most widely used to support transport infrastructure improvements, although there are also examples of obligations being used to support training initiatives, environmental improvements and corporate objectives, as well as to mitigate the impacts of development. For more information, please read ‘Planning for Economic Development’ on the DCLG website.