Sprung tents = 5000 sq ft
MIB Tent = 5700 sq ft
That‘s “total area” though. The Sprungs always have a three-four foot perimeter around the actual build for emergency egress and performer movement (my “Beetlejuice Does Hollywood” house layout was built from a couple of sprung layouts, and includes it). That puts actual house space (with Decor, Audio, and Lighting closets) closer to 4,000 sq ft.
And my calculation for La Bamba is at about 9,000 sq ft (using Google Earth). Even if we split the difference to 7,000 and say 2,500 sq ft isn’t available... there’s still room.
The houses take up less space than it looks like when you’re inside them.