Typically once found and treated an annual inspection can be done and re-treatments can be done early into their repopulation if it happens.However. . . often the damage lies under the surface and is difficult to assess. 

So,  in short, I treat real estate books as a collection of resource materials that I would put back on my shelf for later reference.

I believe a former owner is treated like a holder over tenant.You could also give a quick call the housing court that would cover the property to see what they say.

I wan't to treat this like a business from the very start. 

Obviously there are downfalls to both sides, but the simplest reason I can give to go LLC is that you will be running a business, and you should treat it that way, especially if this isn't a one off. 

Why treat it differently?  

I’ve seen these treated as both part of and additional to “maintenance” in different places.

The transfer the ownership of the company which holds the real property is treated differently from the transfer of real property.Of course, consult a professional.

You can make a smaller radius but for some reason, Facebook will not approve a special ad category with a small radius as they consider that a violation of the fair housing act, which is why they stopped allowing the zip code approach.I treat my ads like billboards, radio, tv, and newspaper ads.

Realize they serve 2 diff purposes:1) LLC is to limit a claimants recourse to your assets and passes thru income to the end entity2) S-Corps are the end entity and are used to reduce taxes (like FICA) and W-2 amounts by providing more generous benes (like retirement contributions) to "employees" as long as all are treated equally.DISCLOSURE - AM NOT A CPA OR TAX PROFESSIONAL.