They track single family houses for large differentials too.I've fought back and gotten a couple partial wins, and one where they backed off and dropped it entirely.Even though the hearing is "informal", treat it like going to court with biased judges.

If they did not, you may have to issue your own notice and wait the specified time frame before you are able to start eviction proceedings. 

You have the right to collect rent, but it's not going to be worth going to court over 1 month of rent.If the situation is you trying to terminate the lease, make sure you brush up on the Fair Notice Ordinance if they've been there for over a year. 

I have thoughts on how to proceed but welcome other opinions.

I'll probably draft one up on my own, go over it with my partner, and decide together where to proceed. 

I need to make a decision whether to proceed with the purchase or keep looking.  

It breaks even, but I'm keeping it for appreciation and I don't need the proceeds that I would get from selling it to keep investing.What's you idea of a worst case scenario?  

The rules vary by State, but if they obtain a majority of the units they may (depends on the State) be able to force a sale through the courts.

Offer your landlord $200 and if he doesn't like that then let him take you to court, or if he withholds your security deposit then take your landlord to small claims court.There is a normal amount of wear, dents, chips and discoloration that is an expectation with countertops.

So if the tenant moved in already, tell the seller either get a unit vacant for you to proceed, or you both need to terminate the contract.