Harcourt said she would love to film in Christchurch again.
"There is so much beauty we could not squeeze into the film. We would love to be able to reflect different aspects of the city as it continues to change," she said.
Dalziel said Cantabrians were generous the film's stars and crew.
"Lead actor Timothy Spall was blown away by the friendliness and warmth he encountered from locals on a regular basis while filming in the city," she said.
Christchurch-based Changeover actress Rosa Garcia Knight said it was fitting for the film to be set here.
"The directors actually said that in this film Christchurch has become a character in the story," she said.
Local actress Lillian Fata said Cantabrians should be proud of the film.
"I'm proud of being able to create the film in a city that has gone through a lot of struggle and being able to shed some light on the negative times that have occurred," she said.