@Jorge Rivera - BP's smartmove, turbotenant, and Ashlyn's company all have their purpose and work well for low quantity or if you are OK waiting a few hours.  

This would be my second deal; I do have capital but not a sufficient amount for entire down payment, closing costs, etc.  

I just determined my tolerance based on past history and decided that $20,000 is a sufficient reserve for my 20 units.

Is a normal homeowner’s insurance policy sufficient, or will I need a seperate landlord policy or umbrella liability policy, or some combination of the 3? 

Otherwise at the start of a project, SF price is usually not sufficient to explain true cost.

The important thing to remember for 3-4 unit properties is the self sufficiency test.

From the Fannie Mae website: “If the parent is unable to work or does not have sufficient income to qualify for a mortgage on their own, the child is considered the owner/occupant” for principal residence properties.I am concerned about occupancy fraud. 

Your basic insurance policy with $300,000 in liability coverage should be sufficient in 99.999% of all lawsuits.5.

I wouldn’t use any HML if there is more than 12 month of payback, simply too expensive.To the OP you were asking for a business line of credit, according to my knowledge, this is achievable by neglecting your personal finances, aka no ties with your SSN, to me that is the real Business Line of Credit, you give your FEIN and bank statements, owner names WITHOUT SSN can be asked for but should be irrelevant, a board resolution with my name and authority to open such account should be sufficient to open this LOC.

I began investing in RE within my SDIRA about a year ago and so far it's been amazing.  10K will get you started, but you'll have to be selective so as to retain sufficient assets to initiate foreclosure if needed.