1 Total costs (materials and labor) for professional installation of a bathroom tile floor averages $10-$40 a square foot, but it can cost more for custom tiles, detailed patterns or unusual room layouts. Expect to pay an additional $200-$800 or more to remove existing tile and repair any damaged areas underneath, for a total of $1,000-$5,000 or more for a typical bathroom (5'x7' to 10'x10').