Floor Refinishing Companies Near Me Cost. The cost to overlay or resurface a garage floor averages about $3 to $9 per square foot, depending on the preparations involved, the size of the floor, and the type of finish. The cost of refinishing your hardwood floor can vary significantly, typically costing between $2.00 to $8 per square foot.

But be aware it’s not a. How much does it cost to diy refinish hardwood floors?