Director Robert Zemeckis filmed this while production for Cast Away (2000) was shut down (so Tom Hanks could lose weight for his character).
Five different versions of the bathroom set were constructed so various parts of the same scene could be filmed at different times on opposite coasts.
The house depicted in the film was used for day scenes only. It was torn down after filming because it didn't meet local building codes. The rooms were duplicated on an L.A. sound stage for night scenes.
Michelle Pfeiffer and Harrison Ford were director Robert Zemeckis's first and only choices for the lead roles of Claire and Norman Spencer.