According to producer Joe d'Amato, the film was a commercial success mainly because of Achille Manzotti's idea to change the title from "Ghosthouse" to "La Casa 3". "La Casa 1" and "La Casa 2" being the Italian titles for Sam Raimi's The Evil Dead (1981) and Evil Dead II (1987).
The shortwave radio Jim Dalen is using is a Yaesu FT- 726 R transceiver.