A small bathroom that measures only about 40 square feet may cost anywhere from $300 to $600. Ceramic is on the low end while marble would be on the high end A medium bathroom measuring 75 square feet will typically cost between $500 and $1,200 A larger bathroom will cost between $1,200 and $2,400 if that bathroom measures about 160 square feet A very large bathroom, which means 200 square feet or more, will run you somewhere between $1,500 and more than $3,000, again, depending on the materials you choose and the difficulty of the job at hand