The awkward way to do it is to bring the habitat barrier outward to enclose everything. Then of course you have to rely on being able to place the barrier in it's intended place each time the blueprint is used.

The more standard way to do it is to save the exterior parts as a separate blueprint. But be clever about how you separate it. Make the joining points very easy so it's easier for subscribers.

If you go for the second option you will end up with two blueprints, good idea to put links to each one in your Workshop listings. Eg so they link to each other.

Hey, thank you for reply. In the meantime, I had the same idea, so changed the barrier, and the house is now also in the enclosure. Anyway, I wanted to upload the blueprint and well, I cannot since an undefined error occurred. Not sure what is happening here. It is my first blueprint for steam I intended to do, but it is getting frustrating.

It might be that you have to log out of Steam and log back in but try it again a couple of times first. Altering and updating a blueprint is exactly the same process as uploading a new one.

I've found you can make a two way barrier in-game. I don't know if it would work for the blueprint, but you could try it with a null barrier.