@Mike Cumbie Thank you so much for your advice. I'm actually trying to do a lot of information gathering in order to come up with some kind of backup plan, as I'm 100% sure that we will not be closing until all tenants are gone - that's just not something we are willing to deal with. If we have to give the tenant a full 60 days' notice, that will put us right up to the end of our apartment lease. I will just have to cancel/postpone all of the work we are doing until then, and we'll have to move in during the work. Inconvenient and a PITA for sure, but at least we will get the house with just a few weeks delay. I do like the cash for keys option, however our agent is also concerned that the other tenants who have already agreed to leave will find out and then they will demand cash. I'm also trying to find out if they have left yet or if they are also staying until the last minute. We are willing to put up some money to resolve this, as we've already invested a lot in this property and we are under deadlines of our own. However, there are limits, of course.
@Aaron K. I agree, I didn't think this was the case, but this seller is very unconventional and does not do anything by the book - which, long story short, has led to her being in all of this trouble. I don't think she even bothered to draw up legal documents with these tenants, but we are working on getting that confirmed with her agent. These are definitely lower-income individuals, so I understand that the options are very limited. However, we are not a charity and we are not willing to take them on. We are really hoping that if eviction becomes necessary, the seller and her agent will be responsible. The property is in Long Beach. Rents are rising quickly here. Again, THANK YOU so much for your time and insights!