So your saying that tax reductions and lowering the interest also have no economic effects because every last penny will be simultaneously be deducted from salary and go fully to increased rent/housing sales?
If rentals are being priced purely based on "what can renters afford", then your problem is with the housing market itself, not with UBI or anything else. Obviously UBI won't ameliorate a situation where housing is priced like that – in that case you would also need to ensure there is a larger supply of housing to make the market actually competitive, but it isn't a problem with UBI, it's a problem with housing.