 "Unnidathil Ennai Koduthen" was set to feature Vijay in the lead role, whom Vikraman worked with in "Poove Unakkaga", but production delays meant that the actor was replaced by Karthik.Meena also had to reject an offer to star in the leading female role due to date problems.Swathi was initially approached to appear in a single song sequence for the film, but her refusal led to Anusha being chosen.