The average cost of installing a door ranges roughly between $90 and $750. This price will vary, however — which it’s important to get cost estimates from several exterior or interior door installation companies so you know how much your specific project will cost.
For example, the type of door you’re installing and its material will factor into the price. If you want to add side or transom windows, this could raise the price. Other factors include whether you’re installing a standard-size opening or a sliding door, and whether you need to replace an existing door.