Most calls start with a room that's changing. It might be a garage becoming living space, a shop floor that has to carry equipment, or an old slab that cracked, sank or kept the flooring on top damp. Before we talk about the new pour, I want to know why the old one failed, because pouring over the same problem gets you the same floor back.
The price moves with the size and thickness of the slab, whether an old floor has to be broken out first, how much work the ground underneath needs, and what's going on top. The schedule turns on the weather at pour time and the cure before anything heavy goes back in. The written estimate puts that scope on paper so you can compare it with other bids.