Importing and Exporting Static Object with Blender

[MadTod]

Hello,

 

I'm making a player home and I hate the horrible holes in the ceiling of the room pieces such as the office, facility, high-end hotel and so on,

so I wanted to remove the ceiling in Blender and use a un-holey ceiling when building the home.

 

So what I ask is this: Under what conditions do I import and export the room pieces I need into and out of Blender.

 

Any help would be very much appreciated, thanks.