Julian Perdrigeat, Director of Mr. Caron Cabinet at Loos-en-Gohelle, a small town near Lille in the North of France, is rapidly developing a reputation as a pioneer in sustainable development. The growing reputation and the remarkable results emerging from Loos-en-Gohelle is due in no small part to the efforts of the conservationist mayor Jean-François Caron who was first elected with 80% of the vote in 2008 and re-elected with 100% of the vote in 2014. Strong testament indeed of the support of the local community for initiatives such as the introduction of solar panels on the church roof or the transition of a disused mining site to a sustainable development cluster which includes for example a centre to support the start-up and development of local eco-enterprises. The success of these initiatives is founded on the principle of citizen engagement which has led to a mutual trust between community and municipality. Julian Perdrigeat will share his experiences of Loos-en-Gohelle in stimulating citizen engagement and support for sustainable development.