PROET S.A. has been constructing Sports Facilities and ancillary buildings, such as Athletes' Guest-houses, Changing Rooms, etc., throughout Greece since 1989.

Using linear and plane prefabricated elements of reinforced or prestressed concrete, PROET S.A. has constructed 24 Nos. Gymnasiums for the General Secretariat of Sports.

Indicative Projects are:

• Gymnasium of Kalambaka
• Gymnasium of N.Ionia
• Gymnasium of Keratea
• Gymnasium of Peania
• Gymnasium of Papagou
• Gymnasium of Vari

Using the prefabrication system of load-bearing walls and predalles, PROET S.A. has constructed a series of small Multi-Purpose Athletic Halls at the following municipalities:

The following Sports Facilities have been built using the transportable heavy prefabrication system:

• Athletes' Guest-houses, Agios Kosmas Athletic Centre, Alimos
• Changing Rooms in various Footbal Stadiums throughout Greece, for the Hellenic Football Federation (E.P.O.)
• Auxiliary Buildings (Saddling Rooms, Stables, Offices, etc.) for the Hellenic Horseracing Association (O.D.I.E.) at the Faliro Delta, which were later transported to the New Horse Riding Centre in Markopoulo

The new Football Stadium of Olympiakos F.C., "G.Karaiskakis", and the Horse Riding Centre in Markopoulo were furnished with special concrete terracing provided by PROET S.A.