I have done some zoning research and it is a big hassle especially with them being out of state (looking to move back home) to try and jump through all the legal hoops to do this. 

The legitimacy of the contract probably only really matters if you have to go to court/arbitration to enforce it.That said, your title company would be a good place to start in terms of getting a legal review, I'm sure they have a real estate lawyer(s) on staff or retainer depending on the state.

That bubble will burst in a very legally challenging way for people who follow that bad advice.Second, you have to be in a position to handle a Due on Salecall.Third you have to be in a position to make every payment on time even if the property is sitting there vacant.You have to know why you are buying the property and what you are going to do with it to be cash positive without question.There are other things but that is a start.

Yes, 100% you are allowed 90 days for occupancy and the lender can also grant additional days based on legal issues so long as they know and are made aware. 

Disclaimer: Not a tax or legal professional. 

Its pretty outrageous if this contract is legal. 

While they may not care much about the neighborhood aesthetics, highlighting the potential for legal issues or fines due to the environmental hazards might get their attention.

Is this legal of me to still require the ESA dog to be fixed?

However, it's crucial to verify with the specific lender, as policies can vary.Regarding recording a lien, if the lien is recorded, it formalizes the debt and provides legal protection for the lender, which might be required by your private lender.

It's available on the BiggerPockets bookstore and helps explain how to fund the loan properly and legally.