You can also just work with a lender that does not season and source deposits and that will pretty much clear up your situation. 

If they don’t pay it will come out of the security deposit.

Keeping the tenant 2–3 months can work if you lock it in writing: interim rent amount, access rights for inspections/contractor walks, clear move-out date, and a rent‑back or temporary occupancy agreement with a deposit; expect slower permits and subs over holidays, and don’t start demo until you have vacant possession to avoid habitability issues.

Either offer them a non-refundable deposit if you fail to close and they get rid of the tenant or move on. 

I did my background research and found out that I could possibly find a lender that would fund the deal as a DSCR loan as the ratio was very good at 1.25 and I had the funds for 25% deposit.However, I haven't been able to close with the initial lender that pre-approved me as a new investor because one of the units in the 5-unit was a Studio and the size was under 400sqft (as against their internal requirements).I have been under contract for the past 3 months and only have 28 days left to close, if not I'll lose my Earnest Deposit and all the time and efforts I've put into making this deal work and currently not able to find a lender that can fund this deal as they keep informing me that I have NO Experience as an Investor - as my first property is still under 1 Year.Please...I'm asking all knowledgeable investors and direct lenders here to come to my aid at this point as I don't want to lose the property nor the money I've spent so far in this deal.

Laura Young was my funding officer, and I settled the $4000 security deposit in January and received a credit back at closing in the last week of February.

Deposit or renter insurance requirements comparison.  

They purchased using a program that finances 100% of your purchase/rehab on paper, and takes a 15% deposit as cash-collateral that they hold until you refinance.• $60k purchase• $35k rehab• $95k total rehab loan payoff• 15% deposit = $14,250 "down payment"• $126k ARV (confirmed via refinance appraisal, borrower expected this to be higher)• 80% rate/term refinance ($100,800 loan) @ 6.75% [700-719 FICO]• Applied $4k of deposit to payoff for an updated payoff amount of $91k• Cover closing costs with 80% r/t refi + $2k back to borrower at closing (still considered a r/t refi if under $2k) + remaining $10,250 deposit reimbursed after payoff = $12,250 total back to borrower• $4k of his deposit + closing costs for rehab loan = his "cash" in the deal• $1,250 market rents• Total PITI = $765.62• DSCR = 1.6327 I do not see the hold costs.  

Hopefully, they don't go bankrupt lol - In order to get started with the process, I have to pay $1000 deposit.

Yes you are out 1 month rent but you probably have a deposit.