I don't think it is this simple. Even with UBI, there will be varying quality of rentals, with nicer ones being more expensive. If every landlord jacked up the price, demand would shift to cheaper, lower quality rentals. More people will get roommates etc, reducing demand entirely.
In addition, every seller of a good/service could do the same. They can't all increase prices to extract the full $xxxx a month. There are much more complex dynamics at play then just "landlords will raise rent enough to extract the full UBI benefit."
In addition, every seller of a good/service could do the same. They can't all increase prices to extract the full $xxxx a month. There are much more complex dynamics at play then just "landlords will raise rent enough to extract the full UBI benefit."