Again all of this varies depending on what you are trying to do, and other financial aspects related to you, but these are common aspects of deals, funding etc. 

If ever there was cause to come together and fight for better enforcement laws, the issue of squatters is it. 

He's able to charge a good bit of money per unit since it's a unique experience, and they should be relatively cheap to build once you have the land. 

If so, ask to see the lease agreement because if you happened to purchase the home you're going to acquire that tenant too, which may come with issues.

The amount of time you will waste trying to dance around the issues will be legenday and shall I say, "insisting on being right (or insulted) when you don't know the answer can be costly".I was planning on getting a CPA, but not knowing the right questions to ask of someone who I don't exactly trust yet (as a new customer) isn't the best way to go about things.

I definitely never thought this would be an issue when I purchased my house.

I believe its the sellers expectations not the amount of money that's the issue.

They are weighing the cost of fighting the "quiet title" issue, what they are going to get at auction, the time frame of getting the property to a sale date and the cost of carrying the HOA fees, the property taxes and the homeowners insurance during that time frame.

I definitely do not condone doing work illegally, however as a country we also have a huge housing issue (and skilled labor issue as I am sure you know first hand).

So, there could be issues with using that lease to evict in court because there may not be proof that the lease was transferred or that the tenant was shown in writing that the new owner has taken over the lease.