- UBI/Negative Income Tax (NIT) is not a handout to literally everyone, only the unemployed and lowest income folks will actually net money. Anyone with a modest income or larger will likely either see no changes to their net income or even a reduction in net income (due to higher taxes to pay for the program).
- Assuming a UBI of $1k (just making a number up, but it gets tossed around a lot), you would only get that full amount if you were unemployed, so that means you are pulling in $12k a year. Someone making $12k a year isn't really going to be renting an apartment by themselves. They are probably going to crash on a couch, live with relatives, or maybe rent a single room.
- As you go higher up the income ladder, the UBI phases out. I am also just making up numbers here, but maybe the phase out starts when you make $1k/month and stops at $3k/month. So someone making $12k a year in income would actually get $24k/year with UBI, but by the time you are making $36k/year you get $0 UBI. There are not a lot of areas in the country where you can rent apartments on these incomes. The places where you can do that, housing is probably not in as much demand and will likely not suffer from much if any inflation. So again, even if you are making a small income and bringing in some UBI, it will be designed to phase out long before someone could afford a one bedroom apartment in a high demand area.
- And I think a nice feature of this type of program, is UBI would actually help even out the demand imbalances between VHCOL and LCOL areas. No one living solely off UBI is going to be comfortable in SF or NYC. But there are a lot of regions in our country that have minimal job prospects and could desperately use some revitalization. UBI would go a lot farther in those areas and would create some monetary inflows back into those regions. That in turn could reduce some of the housing pressure on the VHCOL areas (although I am not sure it would be a huge effect).
It is worth mentioning that I assume most proponents of UBI are also acutely aware of the housing crises. To solve that, we need to build more housing. For the reasons listed above, I don't think UBI would cause much housing inflation, but even if it did, the solution to that problem is to build more housing, not to forgo welfare programs.