Looking at remodeling existing home to more effectively utilize space including bringing an existing closed in lanai area under air and possibly add a third bedroom. Am I looking for a design build firm or an interior designer to begin layout ideas and proposals. I envision the roof on lanai (and the entire roof on the rear of the house) which is now insulated pan, will need to be replaced/restructured. Please excuse the "decor" I am in transition and have begun painting. When looking at attached photos, the approximate measure of the living/kitchen area is 22'x20' and the lanai is approx. 20'x 23'.