The reason behind that is simple: maintaining infrastructure for low density single family housing is cost prohibitive. 

Present yourself as the profesional with high end software and should help to maintain your growth going forward.

Tenant risk is lease term remaining, sales/billings from the location, overall financial health of the tenant (i.e. solo practitioner with this one center as their sole source of income and declining billings, will not likely keep the property well maintained, and when they move out, you will have work to do), need for this use and/or competitive urgent cares in area, etc. 

The important points often glossed over are (1) is the buyer providing their personal guarantee to the seller for the note (2) is the seller maintaining a wrap position so they can foreclose in the event of default and gain ownership (3) is the buyer putting up additional collateral (4) how large is the down payment (5) what is the LTV (6) is this a personal residence for the seller or investment property (7) will the property cash flow and if so what will the cash flow be (8) is the property in a increasing, declining, or stabilized area (9) is the property being sold at market value, or above market value because of the low interest rate of the existing mortgage and (10) how experienced and what is the track record of the buyer, and is the buyer purchasing a property for investment or to live in or otherwise use.  

Many people maintain property they own differently from property they rent.  

In a cooling climate your state's laws probably state the calendar date upon which heat needs to be provided (for example beginning October 15th) and the temperatures that the unit is required to maintain (for example 65 degrees). 2.

Don't forget to factor for this - upon moveout, we reasonably expect to cashflow around $500/mo, which will allow us to maintain and hold for as long as possible to collect appreciation and yes some extra money toward the next investment. 

Be interested in what your thoughts are to include this in a lease (needs to be maintained to some defined degree of cleanliness rather than waiting until move-out and deduct cleaning charges from their deposit).

I am not a CPA, but do maintain books for various real estate-types.

A tenant who fails to maintain a rental property could end up costing you more in property damage and court fees than the amount of rent they're paying you upfront.