I'm curious about what exactly I need to have in place for the park to function properly.

Rather than spend a lengthy period fighting with the community organization on what should be a reasonable variance request, I would like to satisfy the ground level commercial requirement with a space that has the appearance and would function as a home office (which is how this space would likely be designed and used anyway even if the zoning requirement did not exist).

There are services that allow you to collect online rent payments as well as have the added functionality to help you manage your properties all in one place for free.

Features like high-speed internet, a functional kitchenette, and comfortable furnishings can make your rental more attractive.Marketing Your Rental: Leverage your real estate experience to market your rental effectively.

Some methods (amongst many)Well functioning websites with SEO optimization, TV ads, mailers (yellow letters, bandit signs, bird dogs, driving for dollars, networking, foreclosures, estate & divorce attorneys.

After one year (some portfolio lenders will go to 6 months depending on markets) the cost or acquisition or purchase price is no longer used and they may use only the appraised value.I'd question the OPs valuation as well, while investors keep talking about "buying under market value" most often they are not, again, you may buy at a distressed value, but a physically or functionally distressed property most likely won't get past the appraisal for a residential conventional loan, may not in a portfolio loan as a residence......commercial residential, or purchase-construction loans, yes.

@Michael CamarilloUse the Zillow function on the far right tab under "More" and search the key word "VA" or "assumable". 

@Rahul Ram Keep in mind that cash-flow is a function of how much you put into the deal.

I recognize this is a function of the current interest rate environment but suspect certain areas are more conducive to this than others. 

Wholesalers serve a function in any market, and it's still thriving in Denver.