It's NON-move-in ready and we cannot find any conventional mortgage lender who would lend to us.

If you’re married you can have 10 loans in their name to, hence 20 conventional loans

Other conventional loans are 7yrs?  

The best course of action might be to encourage your tenant to press charges if that is an option. 

@Brian Murray a lender would be best equipped to handle this question, but for most secondary loans (Fannie/Freddie) that I've seen you'll need to go FHA to take advantage of lower downpayments with an owner occupant situation. 5% down conventional is typically single family residences.

If their credit is good enough they can use a conventional loan instead of an FHA loan.

As far as timelines, I put down 5% on my residence and it didn’t take any longer than any other conventional loan.

This means keeping the security deposit in a separate bank account, tenants depositing rent into a separate bank account, and having the ability to apply for a business credit card to charge house improvements and repairs to.

I mean, it doesn’t hurt to ask, but it’s rare/impossible for a conventional mortgage to be in an LLC these days.

Normally I charge for any special order materials up front, first day of work (demo) I get another chunk to cover labor and materials for the week.