Most of my work in architecture is new projects, ground up construction. In my previous life, I did a fair amount of remodel work. With government work, typically I have to pull together a cost estimate during the design. There are several types of cost estimates I do. Even when contracts under way, the government wants a general idea if a change from the contractor is fair and reasonable. Last week I was working on a change order presented by the contractor which was caused by an unforeseen condition.