@Jeff B.
Unfortunately there is no way that only raising rents 10% would make sense in my case. I could easily get $650/month for these units as is, and could almost certainly get $750/month if I put in some new carpet and painted. As I said in a previous reply, I can live with leaving SOME money on the table but a 10% increase in this case would still leave these tenants $150 and $100 under the bottom of FMV which is just too much too leave on the table, even for a very sympathetic landlord like myself. I didn't close on the property with any assumptions, only facts. I know for a fact these units can rent for what I say they can rent for. I have a property I'm currently renting to a great tenant for $650/month that's a 2b/1ba and 400sf smaller in a less desirable neighborhood. The property with rents as is will cash flow around $450/month so even with them staying at their current rents until their lease is up in Oct I'm still going to be ok. But as much as I would like to keep these tenants, this is a business and any business man/woman who claims they would be willing to leave $4200/year in cash flow on the table just to be nice is a business man/woman that I would argue, won't be in business long.