Ki-woo's job, at-home tutor, was chosen because director Bong Joon Ho realized that sadly the job is the only way that families from two extreme ends of the class spectrum in modern-day South Korea can cross their paths convincingly in the story arc.
The Parks' house, said in the film to be designed by a fictional architect named Namgoong Hyeonja, was a set completely built from scratch.
According to editor Jinmo Yang, he edited the film in Final Cut Pro 7 - an editing program that Apple stopped supporting in 2011, on a computer that hasn't had a software update since 2014. He received an Oscar nomination for his work.
Won the Palme d'Or at the 2019 Cannes Film Festival, the first Korean film to ever do so.
In an interview with Korean magazine Cine21, Director Bong Joon Ho spoke of his experience in filming in a hyper-rich Korean home. He said his hand literally shook from anxiety when he was returning a trash can that was used as a prop: the trash can was of high-tech variety that stayed silent even when the lid was being closed and cost as much as US $2,500.