At Seville, he studied at the studios of Antonio Susillo [es] and Agustí Querol Subirats.
With the support of his uncle, Juan Valera, whose bust he sculpted, Coullaut Valera participated in the National Exposition of Belles Artes in 1897, and received Honorable Mention.
Much of the work of Coullaut Valera can be seen in public squares in cities across Spain, as well as in Latin America.
Federico Coullaut-Valera, his son, was also a sculptor who has designed public monuments.
His student Luis Sanguino is also known for lavish public monuments, both in Spain and in the Americas.