After retirement, Komaeda started coaching career at Fujita Industries (later "Bellmare Hiratsuka"). He was promoted to manager as Yoshinobu Ishii successor in 1990. In 1993, he led the club to won Japan Football League and promoted to J1 League. He managed the club until 1995. In August 1999, he became a manager again as Eiji Ueda successor. However, the club finished at the bottom place and was relegated J2 League. He resigned a manager in 1999 and left club in 2000. In 2001, he moved to YKK and became an assistant coach. In 2003, he became a manager.