Will GTA 6 have enterable buildings?
The direct answer
Yes. GTA 6 has confirmed interiors — shops, clubs, and salons — with many more reported.
Confirmed locations like the Jack of Hearts club, Sara’s Unisex Salon, and various stores are enterable interiors, so the feature is confirmed. Reports point to hundreds of enterable buildings, though Rockstar hasn’t published an official count.
Denser interior access would be a major upgrade over GTA 5. The specific "700+ interiors" figure circulating online is an unofficial estimate, not a Rockstar number.