Given the structural modifications necessary to support its substantial weight, concrete flooring can be prohibitively expensive to install in certain locations—the upper level of a home, for example, or the ground floor of any house with a basement. Typically, budget-minded homeowners pursue concrete flooring not with a fresh pour, but by removing the floor that currently exists over the slab foundation. Once that's out of the way, the only costs are elective ones. If you desire, and if you balk at doing the job yourself, you can hire a pro to refinish the exposed concrete surface. Expect to pay anywhere between $4 per square foot for a straightforward job up to around $12 or $15 for highly decorative faux finishes.