The contracting authority shall enter into a parallel framework agreement with up to three (3) tenderers for plumbing work of all types, including maintenance, renovation and new installations within the contracting authority ́s properties, which consists of approx. 130,000 m2 municipal purpose-built buildings, approx. 25,300 m2 municipal residences divided between approx. 300 residences and approx. 9,200 m2 buildings that are not used in municipal service production.  See the tender documentation for further information.