Kitchen addition

rwwood

What is the average square foot cost for building a small addition which is essentially a 10x10 bump out for a kitchen to create a little more room for the kitchen and a dining area? The addition will be built over an existing deck that was framed with a possible addition in mind and will have a gable roof that has its ridge at right angles to the existing gable roof ridge.

Would it be advisable to put concrete block columns under the deck framing if it is currently sitting on PT posts?

What additional framing should be put in the existing roof to support the rafters for the new roof?

Thanks.
RW Wood

AtlanticWBConst.

Problem: No one here can give you any structural advice, as not a single question of yours may be answered properly - online. Every one of your questions revolves around the existing structural dimensions of your home, existing load designs, current footing dimensions , the existing roof dimensions and design, the post's dimensions, the existing frame's design, local code requirements, etc, etc...

Hire one of these: a qualified local architect/designer/construction company and they will be able to figure all that out for you (by inspecting, measuring, calculating, discussing things with you and most importatnly -by actually seeing your home.... which, again, none of us can do online).
They can tie the look of the new addition in with the design of your home, on an esthetic level, as well as the proper structural level.

__________________
- Build Well -

Ron6519

You need plans for this and a permit to review the plans. As Atlantic said, you need to hire someone with the correct credentials who can see what you have and plan what you need.
Ron