Porcelain Tile Flooring Costs. Most porcelain tile costs $4 to $8 per square foot-slightly more than ceramic tile. However, keep in mind that if you’re looking for custom tiles, the price skyrockets to as much as $25 per square foot.Installation generally runs another $4 to $8 per square foot, depending on complexity.eramic tile generally costs $3 to $7 per square foot. Occasionally, you can find it as cheap as $1 per square foot, but you won’t be purchasing a high-quality product. As with porcelain, any custom tile work will be significantly more expensive.