Downstairs is about 13x13 (measured to the framing, not the face of cabinets) and upstairs is 10x14 plus the bay. Both are on the cozy side. The brick to the left wraps around a laundry/utility room. Hope that helps. Have fun with your project!

Thank you, that is what I was looking for! This is exactly what we want to add on to the back of our house - right down to the laundry room. Wish you guys were in Austin!!