Hi, Smitty! I hope you have Excel. I'm attaching some different layouts. Each square is a 6"x6" space. This file includes layouts for each level (basement, 1st & 2nd floors) in different variations. Any room measurement is top to bottom by left to right, so 20' x 13' is 20' long by 13' wide on the spreadsheet. Sorry if that's not the best explanation.
I have other possible ideas but don't want to bias you too much with my existing plans. Note: areas shaded green would be an expansion of our existing external walls. Areas shaded yellow are a reworking of interior walls. Green/yellow areas could be either an expansion of exterior or working with what's already there.
Sheet "1st_A" is a plan that a friend who's a chef and owns her own catering company came up with off the top of her head. She still wants to noodle on it. The back and side walls of the expanded space would be mostly windows. We have a lot of woods on our property, and there are some great views in all directions.
Tab "2nd-FL" shows our plan to create a master BR and bath above our current garage and FR. Currently, this 2nd floor space is just a long attic. There are 2'x8' boards running top to bottom of the drawing above the garage, but only 2'x6' boards running left to right above the FR. I'm not sure what kind of load they can sustain without additional support. But center hall/laundry on 1st floor has two walls that support 2'x6' boards above Laundry and FR. All rafters are 16" between boards center to center. All of our roofs are gable. I tried to mark this on the "2nd-FL" tab.
The unfinished attic above the LR also has 2'x6' boards but these are running top to botXXXXX XXXXXke the garage. This would be a great area to expand the roof and use it for unfinished storage instead of using current low ceiling garage attic or 3rd level attic. But this space is secondary to the Kitchen and DR. Next is the Master Bath/Master BR.
If we could somehow make Kitchen/DR work with existing space and not blow out back wall, then I'd still be happy because we'd have the money to expand the master BR/Bath on the second floor and more area in our backyard before woods start about 40 feet behind our current back wall. But if those attic floors I mentioned above are not going to provide enough support for the Master Bath/BR or unfinished storage (later), then I might put more money into a crazy big kitchen with space below for additional basement. FYI...we live in a colder climate so footers have to be dug pretty deep, so no reason not to go all the way down and expand basement if we end up expanding our first level.
Some other points that might noteworthy is the small area behind our current small deck (14'x7'; behind current long LR) has some water damage on basement foundation. So this needs to be dug up anyway sometime in the future. But if we expanded this area to expand new LR/DR combo, the LR roof would need to be replaced or we'd need an architect to get creative. Also, the back wall of kitchen and DR is probably the best place to expand because current roofs wouldn't need to change. This would be a first floor expansion only because there are other areas to expand the 2nd floor, as mentioned above. And if we did expand kitchen and DR back, I might go an additional 2 feet to 12' to add some extra low-level cabinets along back wall. This would also make the basement addition bigger. You can stop me at any point if I'm sounding ridiculous. :-)
LMK your thoughts. I will add bonus and rate you multiple times to compensate you for good feedback along the way. Don't feel like you have to solve this puzzle in one response. I've lived here for 6 yeas and still struggle with it. Thanks!