Hello and welcome to this site Brandon!  

Landlords Almanac is hosted by Real Property Managment and is more geared towards long term buy and hold investors. 

Does the owner live on-site?

Once I have that information, I usually will go over to the property appraisers site to get the owners information and then ride by the property to see if it is vacant. 

If they start demo,and then never get back to that site, you're in a bad position as you've put in 100% and now have to put in 100% of the rehab as well when you take it back.  

whatever you stance on that, it has created a situation where we (americans) look down on factory built homes.Without the artificial input I believe we would have giant , efficient, factories in every city pumping out modular homes, that are green, affordable and accepted as "normal" and probably cost as much as a nice new truck.If you have ever built a new home, the insanity of "site built" becomes apparent as the waste of materials and man hours can be staggering.

Search the owner name, work backwards thru property appraiser/clerk if court site.

Here's a helpful resource:https://www.hud.gov/sites/documents/SERVANIMALS_NTCFHEO2013-01.PDF

How do I verify that the insurance of the company covers the employees on site? 

This means that you create a listing, then it is sent to all of the major listing sites (zumper, rent.com, apartments.com, etc.) with one click!