I've also heard about rolling over some money into a self directed IRA to invest in real estate, but that doesn't really solve my problem. 

It's written into the lease that tenants must deposit their rents into that particular account (either by online bank transfer or by walking in a check/cash); I do not collect rents directly, nor would I if anyone asked.

My favorite way is is simply using Pricelabs using a comp set, OR using Airbnb itself to see what your direct competition is.

It’s a good idea to speak directly with an insurance agent who understands multi-unit properties to customize coverage for your specific situation.

Did they send you a PDF or did you download it directly from Zillow?

For now, staying local allows me to leverage my property management experience—most of which came from working directly for family and close business associates who were property managers, contractors, and business owners.

The alternative is to set up a self-directed IRA, or better, a truly self-directed Solo 401k plan, invest in alternative assets, and then do the conversion.

When I asked the seller for receipts detailing the work done and requested permission to speak with the mitigation company directly, he refused.

Those companies you asked about are more for deal finding and direct contact to off-market sellers, is that what you are looking for? 

That said, utilities that aren't directly attributed to a unit can be a pain in the neck because everyone is sure that the other unit(s) are using more power than they are.