Catherine Carswell was a Glasgow-born writer and journalist who was intimately connected to her home town. She wrote about life in Glasgow in her first novel Open the Door! in a way that spoke of urban concerns, especially for her protagonist, Joanna Bannerman. By applying a Lefebvrian framework to these concerns, this essay examines in more detail than hitherto reflected in critical commentaries Carswell’s engagement with urban space. Viewed through this framework, the heterotopic possibilities of her writing are laid bare and aligned with a modern and critical tradition of urban writing not identified before in Scottish literature.