Rent controlled public housing. These could be mass produced and stacked like legos so that rents would be less than 1/3 of UBI. With the addition of municipal broadband there would be plentiful jobs for teleworkers in virtual call centers to provide a back end for no-checkout stores and providing teaching assistance to students using MOOCs.

In their own houses. That's what cooperatives are for. Also prices would drop once speculation on housing is no longer profitable.

Private investors aren't the only way to have rentable properties.

And with not for profit housing, rent is much cheaper and gives a much greater opportunity to eventually no longer need to rent.