So, even if the loan amount is the same, and even if the interest rate is the same, with the terms mirroring the underlying mortgage, the seller will have (1) recourse to foreclose if the buyer stops paying (2) with payments going directly to the seller who then sends payment to the underlying lender the seller will know if and when the buyer has not made a payment, in which case they can choose to make the underlying mortgage payment and proceed to foreclosure, (3) the seller’s legal position is enhanced since he holds a debt security interest in the property (4) the seller may be able to wrap a higher amount than the underlying note and or a higher interest rate and (5) the seller’s credit position may be enhanced since he has the asset of the wrap note offsetting the underlying debt.  

To choose the correct path for any particular business a number of questions need be answered first1.

But the rents don't justify it, for example we are renting a 3 bed 2 bath house with a huge backyard in rancho Cordova for 2350/mo, so duplex rents around here are 1800-2200 ballpark.

But you do have the room sharing.. in Cupertino were you have a huge Asian population I know folks that will put two computer kids in each room for 4 bed house 8 techies and each paying 1k to 1500 a month.. can just about make it work since the houses are 2 mil. 

It's 3 bed 2 full bath and 1,300 sqft.

This comes from several data points, the first being the average age at which people are choosing to stop renting and buy their first home.

If you're focused on medical travel folks, smaller 1 or 2 bed properties work fine.

Putting it all together: If I were starting over and looking for a house-hack in Denver, CO today, I'd be looking for a 4 bed / 3 bath property in the $500K - $600K range in an up and coming area (like Aurora near the medical campus).

Hey jason, a lot of investors based in markets like California and New York are choosing to purchase their investments OOS in the Midwest because of the affordability and numbers making more sense.

Most investors choose materials on the fly, right as their contractors need them.