Common Dimensions ;Size (in square feet) ;Average Cost Range

8’x10’ ;80 ;$500 – $1,300 10’x10’ ;100 ;$600 – $1,600 12’x12’ ;144 ;$850 – $2,300 12’x14’ ;168 ;$1,000 – $2,700 15’x15’ ;225 ;$1,350 – $3,600 16’x18’ ;288 ;$1,700 – $4,600 16’x20’ ;320 ;$1,900 – $5,100 20’x20’ ;400 ;$2,400 – $6,400