The Hellenic Organisation for Standardisation was established as a non profit private legal entity with the Law 372/76 that was voted unanimously by the Parliament on 10 June 1976 and was published in the official government gazette on 30 June of same year.

The representative structure of Administrative Council as also the need for quick making-decision led to the first meeting on the 1st October of 1976.

In February 1977 the first cadre of personnel was already hired as well as the main offices established in the city of Athens (Didotou 15).