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.
How much will you spend? The cost of an addition varies widely depending on the type of room and where you live. But just to give you a sense of how much it might cost, CostHelper.com estimates that adding a bathroom or bedroom could run from $25,000 to $50,000.A bedroom could easily cost just as much.ut adding or expanding a room isnât much easier than moving. You have contractors to hire, important decisions to make and a lot of money to spend. Know that a portion of your home will be filled with dust, plaster, nails and other construction materials.