The cost is higher on the spectrum for a third story than a second floor and for additions with dormers very steep pitches and multiple peaks and valleys.
Roof bump out cost.
20 50 30 00 per square foot cost of framing an upper level addition a staircase to reach it and the roof structure.
Consider the cost of permits electrical and plumbing if needed.
2 foot bump out in a kitchen length not provided on a second story cantilevered.
Hang the new space off the side of the building.
2 feet by 10 feet bump out.
According to some anecdotal price reports a bump out may cost.
Here s a trick for building a small addition without paying for any foundation work or maybe roof work either.
4 feet by 10 feet bump out.
However with a bump out this cost is sure to change as the size and construction needed will be much different.
It sounds farfetched but a bump out addition is a clever secure and economical way to add on says curt schultz a realtor architect builder in pasadena calif.