where was four christmases filmed

The film "Four Christmases" was filmed primarily in California, with some scenes shot in other locations such as Hawaii and Louisiana. The primary filming locations included Los Angeles, San Francisco, and the surrounding areas. The outdoor scenes at Brad and Kate's house were filmed in the Santa Monica Mountains near Los Angeles. The scenes at Kate's family's house were filmed in a beach house in Malibu. The scenes at Brad's family's house were filmed in a mansion in San Francisco. The scenes at Rex and Allison's house were filmed in a house in Los Angeles.