Glue down is more for us. The glue often costs .75/ft. If the subfloor is concrete, sealer (2 coats) adds another .50/ft. Then you add $3/ft. minimum for the install itself. Nail downs start at $3/ft. Wood floors are all we do and we are very conscious of doing our jobs to the best of our ability.
1 Home addition cost estimates of $80 to $130 per square foot for a basic family room addition is common. 2  If the home addition includes a bathroom and/or a kitchen, the room addition costs can easily escalate to $200-250 per square foot.
Costs can vary significantly by region, as the same master suite addition costs an average of $137,840 in a high-cost urban market. Choose upscale finishes and a bit more space and your new bedroom costs could skyrocket, with an average price of $224,989 for an upscale master suite addition as of 2014.he National Association of Realtors suggests you can save 20 to 60 percent by building your new bedroom over your porch, garage or a previous addition instead of adding on to your home.