Obradoiro CAB was founded in 1970 and started playing in the third division after acquiring the spot of the basketball section of SD Compostela.

They were promoted for the first time to the Liga Nacional after finishing in the third position of the 1981–82 Primera División B. Obradoiro played only the 1982–83 season in the top flight, where it achieved two wins in 26 games.

2009–10 was its returning season to the Spanish top division, Liga ACB, after the Supreme Court conceded that the Júver Murcia committed improper alignment in a matchup in the 1990 promotion playoff.

A horrible second half of the league, with one win in 17 matches, caused the relegation to LEB Oro, the second division of Spanish basketball.

Obradoiro CAB finished the regular season in the eight position and joined the playoffs, where it was eliminated in the quarterfinals by the champion Real Madrid.