I think you are making this harder than it is.You present the tenant with the bill and tell them they need to pay it, because the damaged was caused during their tenancy.  

All it takes is to present these numbers to the buyer, and it's usually pretty easy to sell. 

Including a contingency in the first 3 days after the contract is accepted is a good idea especially if there are tenants. 

@Wilson Lau does $400/sq ft includes everything - including foundation?  

I am writing my business plan and I am trying to figure out how I will include in the renovation costs from a percentage of the purchase price, This is if I even have to because of the business type?

Quote from @Trino Martinez: I came across an article (link below) about a proposed bill (HB355) in Utah that did not make it out of committee that would include among other things a requirement for landlords to give 60-days notice for rent increases.

I would not include the smoking background and pet policies in every reply.     

Alternative options include a cash purchase, requiring significant upfront capital, or a hard money loan with higher interest rates.

Also are utilities included?

I told them that I had already paid an extra 3% service fee, which they could deduct from the balance, but they claimed it was already included in the mortgage and could not be used for a refund.Now it seems they are fully scam.how can I do to get my money back, I have lost around $6062 USD for this case.Because it is criminal, can we report to police and get the money back?