The Public Land Business Entity (Sepes) is a Spanish public company dependent on the Ministry of Housing "Ministry of Housing (Spain)"), whose ultimate purpose is the public management of land in all its aspects, including industrial, residential, tertiary and logistical land.

In some cases, the activity of this entity takes the form of commercial companies, urban consortia and compensation boards, in which autonomous communities, city councils, other public organizations and even private initiatives also participate.

Its scope of action is very broad, participating in both large-scale urban interventions, residential actions and business parks.

SEPES is the direct heir of two public organizations that achieved great prestige in the urban planning field of the State Administration:[3]​.

The Urbanization Management was created in 1959 with the objective of preparing urbanized land. It operated until 1972, the year in which it was renamed the National Urbanization Institute, developing important residential and industrial land development activity until 1981.

In 1981 the INUR was extinguished, with a good part of its staff and all of its industrial urban planning actions being assigned to the newly created State Society for Land Promotion and Equipment (Sepes) and its residential actions being transferred to the autonomous communities.

Through Royal Decree 1525/99 of October 1, SEPES, Public Business Land Entity, another stage opens for this Public Entity in which new objectives are set and the scope of action is expanded to tertiary land and services.