The main construction contractor is Four Corners International Construction Company, a leading Saudi Arabian construction firm. Four Corners enjoys the 2nd rating class (out of five classes as per Saudi Arabia ration system) which indicate its financial and engineering strength.

Originally formed in 1987 as the Saudi Construction Company, its activities include contracting, electromechanical projects, real estate development, and complete construction works. FCI has completed substantial projects for numerous significant private and government clients in the Kingdom of Saudi Arabia, including the Ministry of Defense and Aviation, the Ministry of Interior Affairs, the National Guard, the Ministry of Hajj, NADEC, and Saudi Telecom Co.