How do I add a patio outside connecting to the house without having the walls disappear or be destroyed?

I had a patio out front in the form of a platform connected to the house but it disappeared when I modified the home. How do I add a platform on the outside of the house that is connected to the house without the walls or windows being destroyed?

Do you mean sth like this?
I build them as a room connected to the house and then I delete the walls and the ceiling.
But I struggle a lot too because almost any object near a platform gets deleted everytime I add or delete a wall or platform -.-

Yep, just like that! I went ahead and attempted to add one, but it ended up destroying the walls and removing my windows and doors! x.x

This is the look so far~

Do the windows and doors also get deleted when you build a room where you want the patio to be?
But even if, the should be replaced relatively quickly(?)
I think with one of the last updates it’s now possible to place windows even when there are furniture/objects near them.
Before, I had to move everything away when I wanted to move or (re)place a window omg ^^’

The windows ended up staying in place, so I added a small wall with the wall tool to connect the walls together and the texture auto filled back to what I normally had. The doors and anything you have on the wall will disappear :frowning:. I had to replace my cabinets and redo all the textures, and replace all the wall decor. :psycat_lay:

But the patio works now as intended?
You can also raise it with the room selection tool and add stairs and handrails.

Yep! I can place furniture on it. It looks nicer than placing them on dirt. lol BUT if i raised the patio… I really want to raise the whole house up too with the patio… and have stairs leading up to the home to avoid the floods.