So the total amount that should be paid will be rent for remaining days in month + security depositORrent for remaining days in month + next month + deposit - I don't know when would this situation arise.

I'll reach out to the lawyer in the meantime, but I suspect if they refuse to pay it, it'll have to come out of their security deposits when they move out?

At a bare minimum, I would require a written lease agreement and a standard security deposit equal to an entire month of rent.

You can use hard money to match your skillset if you need to so you only need 20 percent down for a short time and you can pay the rehab costs on your own out of the money.

Ideally, you'll want to see average 90% occupancy across the board, otherwise you'll be relegated to regional bank and credit union lenders that require (i) recourse, (ii) deposit requirements at close, (iii) slightly higher rates, (iv) lower amortization, and (v) less interest only [if cash flow is a priority for you]. 

Here are things that would not transfer with a sale:-2.5% interest- prop 13 property tax benefit is saving ~$40/monththese are awesome advantages that are tough to match   In addition you have achieve outstanding return from the appreciation since purchase.On the other hand, you have $300k of equity which places the LTV at ~65%.  

The last house I bought, was brought to me off-market by my agent, and it's seeming that off-market is the only way to get good properties without the MLS prices.I've recently got a nice business card printed up, and would like to start a direct mailer campaign, using BatchLeads to find multifamily properties in the local towns that I wish to invest in.I have a pretty strict criteria about what I'm looking to purchase at this time:-Legal 2-or-more unit large Multifamily (not required to be owner occupied)-Each unit should be at least 3 bedrooms (so if it's a duplex, it needs to be 6+ bedrooms)-Sewer (not septic)-Gas (not oil)A lot of this information is not readily available online, so once I start my mailers, I'm sure I'm going to find people who eventually respond, but that don't have criteria which match what I'm looking for.I feel like it would be a waste if I paid a bunch of money for direct mailers, and then someone reaches out to me to sell, but their house doesn't match the criteria of what I'm looking for -- I don't know anything about wholesaling.What can I do to monetize these leads, or is the answer is that I need to learn So we believe no lead is a bad lead.

Good chance they don't pay the owed amount, but you can probably also count it against their deposit and then send the balance to collections if they refuse to pay. 

---DSRC loans avoid this issue.4) Can't represent your LLC in court---You'll need to hire an attorney for evictions, Security deposit disputes, etc.If you need a business bank account, you can open one with a DBA, which you can get at the county.

Yes, you have a deposit, but it may not be enough.2.