Contracting body: Sociedad de Infraestructuras y Equipamientos Penitenciarios y de la Seguridad del Estado (SIEPSE).

The project comprises the comprehensive refurbishment of a centrally located building in Calle Los Madrazos, in the Congreso de los Diputados area of Madrid. Situated on a plot of 3,000 square metres, the building consists of a basement, five floors and a cassette.

The works included in the contract include demolition and structural work to change the location of the vertical communication cores for stairs, lifts and their shafts. The construction of new floor slabs, a transformation centre in the basement and the renovation of the existing roofs and patios will also be carried out. .

In the interiors, porcelain stoneware tiles, office partitions, partition walls and plasterboard and acoustic ceilings will be installed. The refurbishment also includes the renovation and cleaning of the façade, which will incorporate new aluminium exterior joinery. .Certified sustainable buildingAs a public infrastructure of the State, the execution of the National Police Private Security Unit establishes a series of specific requirements, in terms of quality and environment, which must be met.

These requirements require Sando Construcción to effectively integrate energy efficiency and circular economy measures, such as the revaluation of between 50% and 75% of the waste generated on site. Compliance with these measures is accredited by obtaining the ‘3 green leaves’ seal awarded by the GBCe of the Green Building Council Spain, which certifies the sustainable construction of the building. .