SEIS is a company of the ACS Group, a world reference in construction and services activities. A group that participates in the development of key sectors for a country's economy such as infrastructures and energy.

The ACS Group participates in all types of infrastructure and construction jobs through the company in charge of the construction activities, Dragados, S.A., to which SEIS belongs.

The magnitude of the works handled by the Group requires a solid structure of means and technology that, together with a demanding subcontracting policy, results in a more integrated production.  In this way the ACS Group guarantees both deadlines and maximum levels of quality and safety.

The building activity encompasses the construction of all types of residential and non-residential buildings including commercial, health, governmental, cultural and sports facilities and schools as well as the restoration and renovation of singular buildings. Our activities extend throughout Spain including our most important cities, residential areas and tourist attractions on the peninsula and Balearic and Canary Islands.