Prepaid interest: Most states have online calculators to calculate loan closing costs.

The costs are-$1740 origination charges-$650 appraisal fee-$65 credit report-$150 title endorsement fee-$695 title escrow fee-$450 lenders title insurance-$50 title messenger fee-$300 title notary fee-$50 title wire-$425 recording fees & taxes-$933 prepaids (insurance, property taxes, interest)-$1043 homeowners insurance-$1792 property taxesTOTAL CLOSING COSTS: $8,343

The new loan amount can be no more than the actual documented amount of the borrower's initial investment in purchasing the property plus the financing of closing costs, prepaid fees, and points"... 

A few k were pre-paid taxes, insurance, interest, etc I'm sure, but that's a lot.   

Pre-paid like taxes/insurance/interest?   

You do need a copy of the current Rental Agreement and all addendums; a current Rent Roll or Delinquency report showing payment status, name and contact number/email for all Tenants; Security Deposit balances for each Tenant and instructions to transfer them to you at closing, along with any pro-rated, pre-paid Rents; and an estoppel agreement signed by Seller and Tenant confirming the key terms of the Rental Agreement.

Typically you will see, origination fees, processing, underwriting, taxes, credit, prepaids, and title/escrow fees. 

Here is the specific section @Jonathan Klemm referenced up top:SECURITY DEPOSITS AND PREPAID RENT {MUN.

You are still stuck with all of your money in the project and you would have to add money to cover the remainder of the purchase, pre-paids, closing costs (x2), etc. 

@Teague AndersonI am not a lender or anything, just a regular person but in my experience yeah it is all a numbers game.In my experience that 20k of rehab costs must be prepaid into the loan to appear on the HUD.