The War with Grandpa was adapted for the screen by Tom J. Astle & Matt Ember and Dave Johnson, produced by Marvin Peart (The Perfect Holiday, Mob Wives), Rosa Peart (Life on the Line) and Phillip Glasser (Little Savages) for Marro Films.
Peter (Oakes Fegley) and his Grandpa (Robert De Niro) used to be very close, but when Grandpa Jack moves in with the family, Peter is forced to give up his most prized possession, his bedroom.
The War with Grandpa is scheduled to be released on October 20, 2017.
Co-producers are Mandy Spencer-Phillips (Life on the Line) and Alan Steinman (You Can’t Have It) for Marro Films.