NOI divided by purchase price gives you cap rate. 

Have you considered using a down payment assistance (DPA) loan/grant for this purchase?

I recently purchased a triplex in Pittsburgh and have had success with it so far.

@Mike ReynoldsSeller financing is allowable for Solo 401k purchases.

Second only to fixed costs of operation which disproportionately impact the lower cost properties often leased to subsidized tenants (also rarely represented correctly on spreadsheets pre-purchase).

Purchase price: $450,000 We bought this park for $450k.

Purchase price: $350,000 Cash invested: $10,000 House hacking my first home by converting the master bed into an independent studio that we rent on Airbnb What made you interested in investing in this type of deal?

The only additional thing that needs to happen is make sure appraiser makes note of why the value increase in as is vs previous purchase price.

@Wade Wisner -  Most of the notes that we purchase we keep in our portfolio and borrow against them with private capital.

Sandra For transparency purposes, I believe you meant to say that you purchased a turnkey property from Memphis Investment Properties, not Memphis Invest.