In April 1971, the land, then located in the residential neighbourhood of Chacarilla del Estanque, in what was then part of the district of Surco (today San Borja) and with an area of 949,696 m2, was selected and the expropriation process began, whose appraisal was carried out by experts of the Ministry of Housing and Construction, simultaneously the topographic survey was carried out by the Military Geographical Institute.

In mid-1971, a group of highly qualified architects was invited to discuss and criticize the preliminary project in order to choose between several alternatives.

In October 1971, a coordinated plan between different construction firms under the supervision of the military began, with a deadline of 9 months, with priority to urban rehabilitation.

Simultaneously, a process of urban reforestation began in both the interior and exterior of the complex with the intent of improving the air quality of the surrounding area.

On January 22, 1975, the official inauguration of the new premises of the Ministry of War Complex was held, with the presence of the then President, Juan Velasco Alvarado, as well as other authorities.