Danish to English Other Construction / Civil Engineering

Det, som gør en entreprise til en **totalentreprise** er således, at entreprenørens rolle er total, forstået på den måde, at den omfatter både projektering og udførelse.

I am translating this text into Spanish but I cannot find a right translation for this kind of company. I guess I could better look for it with the English translation, and I would appreciate your help in finding it... Thanks!