You need to do Cassie's route. To start it, visit the slums and force pass the toll guy, then sleep and return to the slums! Whereas to finish it, speak to Arlene, then visit the hobo area and get their help, before returning to Arlene! You'll need to sleep periodically to move events forward. You'll also need Fawn's help
Once Cassie's route is done, talk to the renovators in the city