The way it works now, not really. Each piece is a separate blueprint. IE: Floor, Ceiling, Wall, Door etc. Each with it’s own functionality. Yeah, you could build a structure on the bp out of say 10 floors a bunch of walls and ceilings and place it in the world fine. The issue would be what that unless you based the main base structure off the doorframe/windowframe/hatchframe, there would be no way to attach a working door/window/hatch since a door/window/hatch has it’s own bp that handles it’s functionality.