Average Cost. The average cost to purchase and have the vinyl siding installed is anywhere from $3.00 to $7.00 per square foot. If you are purchasing the vinyl separate from installation, you can be sure that the installation will cost anywhere between 30% and 50% of the raw material cost.dditional or Supplemental Costs. When you install a the vinyl siding you need to be prepared to spend additional money on the following items: 1  Building Permits: The cost of this is dependent on your local municipality rules and regulations (usually will not cost more than a couple hundred dollars).