Technically speaking, I have been told by several lenders that short term rental income is not considered stable (even with 2 years rental history unlike long term rental income). (biggerpockets.com)
Recently, a friend of mine signed a two year rental agreement with a small mom and pop rental place. (law.stackexchange.com)
Anyway, a third may be too high for a one year rental even on the rookie pay scale. (sbnation.com)