Or are you just “estimating” what vacancy would be but as long as the property is occupied there is no literal monetary value placed on a presupposed vacancy rate? 

Stocks, etc. may appreciate (don't always), but cost "nothing" to own.Property incurs on-going costs of ownership in the form of property tax, even when there is no monetary lien and without regard to ap-/depreciation.

Worked to get non-monetary value by negotiating sit-downs with the seller, who is an established investor in the area.

You are only due monetary damages for actual damage from the pets.

Since the 1980s (really since 1971 going off the gold standard), financial markets (stocks, bonds, and real estate) have been greatly influenced by Central Bank manipulation of interest rates and other extreme monetary policies.

monetary heroin to try and keep the bubbles inflated

Throw a Dem in the white house in 2020 that drank the MMT (modern monetary theory) coolaid and believes deficits don't matter, and the annual deficit could easily reach 2-3 trillion, or higher.  

What an Umbrella Policy does is provide you with additional monetary coverage above the limits covered in your Residential Policies (Tenants), or your vehicle insurance policies. 

And while I know sometimes houses don't sell and realtors don't get a commission, If it was me, I would provide some monetary payment for her work.

There are entities that can are created to allow you to scale without such a high administrative and monetary demand - entities such as the Series LLC.