The size of the green will be determined by the property owner’s budget, area to work with and the length of the shot to be played into the golf green. Artificial putting greens are no different than natural grass, the size of the green must be proportionate to the length of the approach shot. The average golf green on the PGA Tour is 6,500 square feet. The average IntelliTurf golf green normally ranges between 1,000 and 5,000 square feet.