I do not think it will work as a rental property because of this, so I am thinking about selling it.

(And, beware of promoters that are selling captive insurance as a tax-shelter; not saying that they none of them provide the purported tax benefits - just that you need a captive insurance tax expert help you make informed choices.)

B buy a building with your credit, get a mixed use approved. don't improve 7000 sq ft as a tenant. all the rich guys are owning real estate. negotiate with yourself market rent and multiple tenants. occupy less than 25%. look at land. don't do this. 7300 sq ft is crazy to build out for a dental practice. get a few other dentists to split the cost with you and do a sale leaseback, you can probably sell the building and roll the business up to a private reit attach real estate to it. 

I have found an off market property from someone that we were referred to by word of mouth who is selling a lot in the North Carolina mountains, the lot is a little over half an acre.

I have a lead on a property that my uncle is considering selling.

Casual conversation with a friend about his interest in selling the property due to partners divorce.

We want to sell it to our nephew (who has had use of it for several years and owns the adjacent property) for $150,000 (well below market value) with us financing the loan.

The sellers needed to sell in order to buy their new home.

Sources that might be able to help are Commercial Realtors that sell Apartments, property managers, Local Real Estate meetups, CPAs or Attorneys that deal with Apartments.  

Even if I move back home, I can sell it when it appreciates in a couple years or even keep it to rent to other tenants.