COLLOSA Employee Directory
ConstructionCastilla And León, Spain201-500 Employees
COLLOSA is a construction company based in Valladolid, in the Castilla y Leon region of Spain. It traces its origins to 1944, founded by Patricio Llorente de Blas, and formalized as a sociedad anónima in 1973 when three of his sons joined the business. By the late 1980s, COLLOSA had become the core of a larger corporate group, expanding through diversification to meet growing infrastructure needs in the region. The firm is characterized by a strong orientation toward its clients, a professional workforce, and ongoing diversification and innovation, factors that have contributed to its leadership position in its sector. It serves customers seeking infrastructure and construction solutions in Castilla y León, reflecting its evolution from a construction company into a broader enterprise within the regional market.