solver

DBX is short for Dialog Box. When you open an item, like a wall, to make changes, you are opening the Wall Specification dialog box. Why does this detail need to be correct in the plan?

This is what I get when using the default settings. Not balloon framed. What do you want that is different? It sounds a bit like you want to frame a second floor deck, setting the roof on it, instead of building second floor walls. Like this.

Is this what you are trying to do? I did this quickly using manual roofs, so there are plenty of problems. We need something to start from.

How the house and garage connect is not clear from your images, and I believe this will be the most difficult part of the plan. Starting with a practice house. Draw the rectangle to represent the house. Build a second floor and set the 2 end walls to be full gable. Use the defaults for ceiling heights. Break the front wall where you want the gable, and set that wall section to full gable. Use the Room Divider to outline the porch. Set the room type to Deck, change the settings to have a roof. Set the pitch on the 4 outside walls to the proper pitch. Turn on Auto Build Roof, if off, and view in 3D. The roofs should look correct, except for the vertical distance between them. Go to the second floor and reduce the ceiling height until the upper roof drops down on to the porch roof. If the house were all you needed, you would turn off Auto Build Roofs, and raise the 2nd floor ceiling height back up.

All gable.

These change the upper floor some, and attempt to simplify the design a bit.

Last 2. Roof is all 7/12 except the shed roof over the rear deck.

Simple gable.

My version of Jo Ann's version.

Well done Jo Ann

The hallway width should work for you. I understood the laundry access chute.

I assumed the floor above should not be a slab, and changed it so it was wood framed. I guess if I had read the OP, I would have seen it was concrete.

I've attached your plan showing a few changes. I used an invisible wall to define where the slab stops and standard floor framing starts. It's often instructive to review framing to see what the program thinks. There are multiple problems with your foundation. Everything is floating above the slab several inches. When I rebuild the foundation, much of it disappears. Mick is also correct about the ceiling -- nothing will display when it's set to 0". New Harmony - Eric A.plan

Added white band around base of main floor.

Pitch on front porch roof only increased to 4/12.

See: Automatically Building a One and a Half Story Roof

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The ceiling is following the roof. Easy for me to fix with Pro, but I'm not sure how you would. The big roof is steeper than 12/12. You might play with the pitch, comparing to the picture. I would have guessed that was a church at one time. Looks like you could have a 3rd floor loft space too.

Make upper flight of stairs 5' wide. Add detail above round window in front.

Ideas on the floor plan. The Laundry seems very big -- anything else that could go in there? The hall past the master closets looks small, like it might be a bit congested.

Are you working from field measurements, or just guessing at pitch and other dimensions? If guessing, I'd suggest a site visit to gather all the necessary measurements. You have 3 different pitches, over the large space, over the connector between kitchen, and over the master. These need to be correct in the model for the roof to build correctly. The fascia height is dependent on several things -- roof pitch, overhang and ceiling height. The simple solution is to raise the master bedroom/bath area ceilings to force the fascia to align. Not sure which wall you are referring to, or what looks wrong.

I changed the pitch on the 2nd floor roof to be the same. Not really suggesting this, but I was curious about how it would look.

I should have been more clear. On a 1-1/2 story house, the LAST step is raising the 2nd floor ceiling heights. You will want to get the roof to auto build correctly first, then raise the ceilings. The master bath and hall bath have different ceiling heights than the master bedroom and hall. 3/8" different, but that's enough to change the roof.

David seems to be correct. You can create a representation, but it won't be very accurate.

Start by getting your room heights correct. Adjust roof pitch as needed. The roof between the bedroom and kitchen is a lower pitch, for example. You can break a wall (with the wall break tool) then assign a new pitch to just a portion of a wall. Make sure the fascia height matches the structure. Thinking of just the roof, You will need to think about the connector space leading to the garage. I show a roof over the hall and closet which works OK. Anything bigger does not easily work with the existing roof.