[_rpd]

Net rental income will remain steady, since landlords will raise the rent to pass along the tax. They may even list it on the lease: "Rent $1000 + UBI tax $400." Everyone will have more money and be able to pay the higher total. The only way the rents can be prevented from rising is instituting price controls.

The percentage of income claimed by landlords will increase slightly ...

before the BI-increase: say $12k rent of $36k income = 33%

after the BI-increase: $17k rent of $41k income = 41%

The only way rents drop is that zoning laws change to allow massive increase in rental space supply, or demand for rental space drops because people are enticed by low rents elsewhere and move. Since zoning laws will change only glacially, if at all, rents less than $(pre-BI rent + new disposal income) will require the Great Universal Basic Income Migration (GUBIM) from urban to exurban and rural areas. The GUBIM is possible, I just think it is vanishingly unlikely.