The cost of hardwood floors depends on the type of hardwood chosen, as well as whether you opt to have a professional install it or not. For standard hardwood, a cost of $8 a square foot is the average. For wider planks, the cost can increase to roughly $12 a square foot. For factory-finished wood, the average is $12-$14. More exotic types of wood, such as Brazilian cherry or Australian cypress can cost as much as $13.