The larger a dormer is the lower its cost per square foot will be.
Cost to build out second story attic.
20 50 30 00 per square foot cost of framing an upper level addition a staircase to reach it and the roof structure.
Reusing materials will produce a cost lower on this spectrum.
If you already have the window in place you may be able to take advantage of that extra space.
Building a second story addition with multiple rooms costs 100 000 to 350 000 depending on the size complexity and quality of materials.
24 500 for dormer 16 wide x 14 deep.
80 125 per square foot or 17 900 to 28 000.
Flat roof dormer cost.
Building a bathroom transforms your attic into a fully functional room that you can use as a bedroom or office.
While this major addition can cost anywhere between 90 000 200 000 it does add significant square footage and resale value to your home.
If your attic is already code friendly not as much renovation will be needed.
Cost to add a second story.
This means a smaller renovation budget is possible.
The price to finish an attic with a dormer is 4 600 to 16 400 depending on how you plan to use it.
The average cost to add a second story is 100 to 300 per square foot.
Average cost and size.
If you want to convert the attic into a bedroom be sure that the window is at least 5 7 square feet.
While it is usually cheaper to build up than out that s just the actual construction expense.
Work with a builder or architect to make sure your home s structure and foundation can handle the additional weight.
Flat roofs have less roofing material but more siding so your cost will vary based on the price of the materials you choose.
In general it is less expensive to build up than out but that comes with a lot of caveats.
One of the biggest home addition projects is adding a second story.
This will depend on your attic s space and your location.
A luxury bathroom that makes use of high end materials and finishes costs 25 000 40 000.
The average attic conversion cost has a wide range of 25 000 to 50 000.
According to homeadvisor the average cost for building additions is between 80 to 200 per square foot without regard to whether it is up or out.