BUBBLE:
Who moved in: Only Shivon Zilis, who lives in the gated community with their children while Musk comes and goes.
Who didn't: Grimes refused to live there and says a bitter custody battle bankrupted her. Ashley St. Clair was urged to spend time there and also declined. Justine Wilson's children are adults, though a source said there would be room for them to visit.
Musk's denial: He told Page Six he neither owns nor is building a compound in Austin and that none is planned, calling it at most an idea for a public art project.
So in practice it works as a home for Zilis's family with Musk visiting, not as the shared household of mothers that was described. I found no reporting from 2026 suggesting any other mother has moved in.