Mark3D

If you use a room molding set to the height rafter gap and a negative offset to its thickness it will fill the rafter space on the exterior walls also paint it with wall material for the interior not a perfect way but bay be usefull

I had a try at setting foundation heights first i set the foundation defaults to suit the new work then made sure they were set to defaults in the rooms then i manualy set the existing to the different heights it always good to get the defaults correct for the main part of your building

with the fire place those walls are set to railings untick railing and use shelf ceiling as david point to in video also x12 can now select doorway with no casings that is one of x12 new features

Waltner Addition 2020 Updated.plan

Could you cheat and put a poly line solid over the top so you elevation looks correct

open the exterior wall it sits on, under roof tab un tick upper pitch you must have selected it and forgot

Here is a file it maybe what you are trying to achieve it is in X7

Pool House v4.plan

What version of chief are you running I played with the file but it seems like it is very old version

Here is a link to the file

https://drive.google.com/open?id=1-2PrXmIBT6R9GQVJBMSIJpYegCPcdjZa

you will see i just put elevation region set to zero to flatten the terrain under the  building

is this what you want

Could you put the file on drop box or google drive and share a link

Try deleting the plants and trees  then see if the file is smaller you will have made a mistake with terrain elevation data

also you could try changing the layer colour for elevation data in floor plan view to some thing that stands out to help with trouble shooting

try posting your plan,  your base line might be off angle not  in line with wall

Also i forgot under rail style you can select follow terrain

try fence and set to balusters

Try this file it might be what you want if you want the roof fixed you need to show what is required you may have some plans or photo to help explain

Shire_copy.plan

check this file and see if that is what you want

bath.plan

is that what you want

https://www.chiefarchitect.com/videos/watch/311/drawing-a-suspended-ceiling-with-grid-and-tile.html

how to lower ceiling

to lower your ceiling put the 12" air gap in the ceiling finish not the ceiling structure

Well I think you have done really well doing what you have  considering it your first go probably  best to post your plan you have come to the right place this is a place of help not a place for business there are other section in this forum for that

15 hours ago, Bob-Roraback said:

The new ability to edit polyline solids in X12 has opened a whole new world in what can be modeled!

Thank you Chief Architect.

 

how did you spot this feature as i can not find it in help whats new did you stumble on it or was it in videos it should be useful

19 minutes ago, Chopsaw said:

If you still want the siding to cover the floor beams take a look at the settings for the living room floor.

 

Apartment_Plan_Chopped.plan

good idea

the plan with it done

Apartment_Plan_1.plan

the beams under the house disappear because you stole them from the deck  so rebuild deck framing the draw new house floor beams  then draw your stairs  see if that works

you should be able to just draw the steps and for grass under  open terrain and un tick hide terrain intersection buy building plus rebuild deck framing it will raise as you have already altered the floor level

Have a look at this file you need to set floor under this room on first floor room  auto buid joists and you should be back in action also i would draw draw a wall on foundation level to cover beams i try not to pull down walls

Apartment_Plan.plan