What do you need from us? IMO you need an architect to make sure the addition is done in such a way as it looks like it was always there and that takes some serious talent.

You need an architect to be sure it looks and functions well.

Thank you for your input. I am wondering if people have put additions on and how they chose the style etc. You are right, I want it to look cohesive :)

Terrible photo but thoughts on something like this?

You may want to have someone check out your existing framing. The photo appears to show some inadequate conditions with the second floor joists.

yikes! We have never been told that. How can you tell? Thanks for your input.