Kadhalikka Neramillai was one of the earliest full length Tamil films in Eastmancolor. Film critic Baradwaj Rangan believes that with this film, Sridhar became the first Tamil director to "make an all-out comedy in colour". Principal photography commenced with the song "Anubhavam Pudhumai", picturised on Ravichandran and Rajasree. Portions of the song featuring the latter were the first scenes shot. Because the producers had not taken measurements for her costumes, Rajasree was sceptical about whether filming would begin that day. She was given a nightgown as the costume for the song sequence. Sachu's costumes were designed by Sridhar himself. An electric power cut was imposed during the week ending 22 June 1963; while this reduced work in studios by 50%, an unfazed Sridhar did "a brief spell of shoot" for Kadhalikka Neramillai at Vijaya Vauhini Studios.
