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Question DetailsAsked on 10/18/2015

mlo
cost per square foot for room addition Harrison tn or cost of this project approximate

Cost to add on to back of house upstairs level across entire back of house. Will need to add a roof, etc. Addition size would be 10 x 34. Want the space to include dining room 10x 14, screened in porch 10 x 20.. Space under addition can be blocked for support with outside finish left as block or stuco

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Here are a couple of prior responses to similar questions FYI -


https://answers.angieslist.com/What-a...


https://answers.angieslist.com/How-ty...


Your building costs I would expect to be less than the above ones - commonly in low cost areas like yours something in the $100-150/SF for normal bare-bones construction is normal.


However, talking about putting in a second story (as I read it) addition without a first floor addition (with windows, etc) under it sounds goofy - because you would be paying for the foundation and walls but not using that space you paid for. I would reconsider - maybe make the underlying area into a basement or craft/hobby room or sunroom or spare bedroom and bath or such as might be applicable. Anyway, you are talking basically two stories of construction (unless the second story is at ground level at the back of the house), so in that case if basically building two stories to get one your cost would probably be more in the $200/SF (based on the 10x34 feet addition) ballpark, plus or minus probably about $50/SF depending on HVAC and plumbing and such which might have to be extended or moved.


One other factor which would affect your cost, depending on amount of windows in the new room and such, is whether your HVAC system will need replacement (or supplementation) to handle the changed heating/cooling load.


Your starting point before finding a General Contractor to do it - an Architect, to finalize your concept and get a construction cost estimate, and for the plans and specs needed for a building permit, for bidders to bid to, and for the successful bidder to build to.

Answered 4 years ago by LCD




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