KSBY-TV is the NBC affiliate in San Luis Obispo and Santa Barbara counties and made its on-air debut in May of 1953. It went on the air, however, as KVEC-TV. The VEC call letters stood for Valley Electric Company. KVEC-TV was the first local television station built in the Central Coast of California. Originally, the station carried all three television networks: NBC, CBS & ABC.
- On June 13, 1956 the TV station, along with KVEC Radio, was purchased by John C. Cohan (founder of Sonic Cable) and Jerome Kantro.
- Central California Communications Corporation purchased the station on July 18, 1957. This company was formerly named Salinas Valley Broadcasting Corporation and owned KSBW in Salinas, California. It was at this time that the call letters were changed to KSBY.
- On February 14, 1979 both KSBY and KSBW were purchased by John Blair and Company - a New York based broadcast sales representative firm.
- Seven years later, Gillett Holdings, Inc. purchased the stations on December 30, 1986. Gillett owned several television stations and was a major developer of the resort city of Vail, Colorado.
- EP Communications (Elkin Pianim and Elisabeth Murdoch, daughter of media mogul Rupert Murdoch) purchased the stations September 22, 1994.
- SJL of California, L.P., purchased KSBY on January 17, 1996. At that time, KSBW and KSBY were separated, Hearst Argyle purchased KSBW.
- In September, 2002, KSBY-TV was purchased by New Vision Group; an Atlanta based broadcast owner and operator.
- On February 18, 2005, KSBY-TV joined the Evening Post Publishing Company becoming the eleventh network affiliated television station in the broadcast section of the company: Cordillera Communications.