average cost to install architectural shingles
Asphalt Shingle Roof Average Costs. The actual cost of an asphalt shingle roof may vary depending on the materials used, your location, the complexity of the installation (i.e. roof slope and home height), and other factors. 1  3-Tab asphalt shingles cost $1.50 to $3.50 per square foot. 3-Tab asphalt shingles cost $1.50 to $3.50 per square foot. 2  For an average-sized (1,500 square foot roof), the total cost might be $2,250 to $5,250.