D4COST is easy to use and allows you to calculate several different variables on a per square foot basis. If you are looking to calculate the cost of any project, D4COST is the software you will need. It is difficult to find a project that D4COST doesn't have a cost for, but if you are looking for a quick price, that's what it's there for. I like the software, because it is very easy to use. Just about any project I have seen has a cost for, and it is very easy to calculate. I have no complaints. I do wish the software was a little more user friendly, but that's a very minor complaint. If you're looking to calculate a project cost, D4COST is the software you are going to need. It is easy to use and can be used for many different projects.