How many folks here have built a freestanding building for their home theater?

I currently have a pretty awesome home theater in our basement I built but we're trying to sell our house and the house we're trying to buy doesn't have a good spot for one. I also am losing my wood shop so I was thinking about building a building and splitting it up into sections so I can make up what we have in our basement.

So I'd love to pick the brains of those who built a building for their HT. Kind of leaning the pole barn route versus stick and then just outfitting the inside like a regular house.