[2][3] Born in Barcelona, Terradas attended the founding meeting which formalized the establishment of the club, held at the Gimnasio Solé on 29 November 1899.

He became the first patron of FC Barcelona, with a contribution of 1,400 pesetas, saving the club from bankruptcy.

Terradas created the club's first sports committee, formed by Gamper, Meyer, and Viderkher.

In addition to being president, he kept representing FC Barcelona on the field, which was common at the time, being a member of the Barcelona team that won the club's first piece of silverware, the 1900–01 Copa Macaya, even netting once, in an 18–0 win over Tarragona.

[1] In the following year, however, his father died and he had to take over the family business, thus leaving the office on 5 September 1902.