They already have model apartments with the square footage listed. They just need to establish different SKUs, and then instead of going to the warehouse to get your flat pack, you get a key card for the elevator and go up to your apartment! Though I think if the Swedish Meatballs became my staple diet, and I were exposed to their desert display daily, I'd die an early death.

I've had those books on Space Colonization by TA Heppenheimer, and some of the illustrations inside have a definite IKEA-ish vibe.