In order for the sale to occur and any title company to underwrite that sale with a title policy, the tax lien would need to be paid either A) prior to closing (doesn't matter who pays it) or B) will be paid at closing out of the Seller's proceeds.  

Where I live I would not be able to get an insurance policy for a house with knob and tube wiring.

Our web site gives prospective renters all the information they need to know, including maps to the location, pictures, square footage, rental policies, rental applications, links to our background check, etc.

State farm lets me do the commercial umbrella and keep original personal policies, but I have to increase the liability on each of the individual policies to 500k from 300k, which will add to each policy.

You are required to disclose, as well as use the registered name on all marketing material related to brokerage services, you may also want to have in writing a policy or agreement with your broker regarding compensation related to your wholesaling activity, I think you are getting into some difficult practices, be sure to have your ducks in a row

I was planning to house hack by purchasing a duplex or a four-plex with a VA loan that would allows me to put zero down.

When we first started looking at multi units (with zero managing experience), all of a sudden we qualified for a couple of $600+k 4-plexes because the income from the units were factored into the banks qualifying equation.

Do you have a good lease, accounting software, intention to inspect the unit twice a year or more, online payment system (you'll want this since you travel alot), screening criteria, and ability to implement all of your policies and deal with tenant issues along with showings associated with vacancy?

I am sure the hard money lender got a title policy when he or she made the loan.

Which insurance companies do you use and what are their policies on renters insurance?