Ethniki Asfalistiki used as its headquarters in Heraklion, Crete, two privately-owned premises, combined with a tenant. The total area was ~ 280m2 and was built in 1997. In a process of re-evaluating the use of the company’s property, it was necessary to abandon the rented and the two remaining to house the branch and a Life Insurance Office. This required a radical renovation, and in this context we drafted the study of space configuration, infrastructure upgrading and the use of more energy-efficient cooling, heating and ventilation methods. We drafted the tender and managed the construction until the completion of the project.