That (and insurance issues) are two big risks.

Taxes/Insurance- depends a lot on where you are located.The homes themselves- POH or TOH? 

That will only leave healthcare to be something I will not have direct ownership or control over as I cannot feasibly own a hospital, nor an insurance company.

The agent has insurance, but clearly, they should not be an agent if they don't disclose this. 

You're running a business and businesses choose what payment methods are acceptable to them - not the customer. 

Maintenance/cap ex, insurance, if a rental PM, bookkeeping, misc.The fact you have a loan means 1) leverage 2) equity pay down.In addition, there are tax benefits.So I will do some rough underwriting as an OO non-rental at 95% LTV (because FHA has some undesired consequences that make the 1.5% difference in LTV worth avoiding the FHA).equity paydown: 20% (using OP interest rate at 95% LTV and not counting closing costs). 

The insurance is higher along the coastal areas because of potential hurricanes but not bad the further north you go.  

Life Insurance covers everything 

As you alluded to, sometimes a passive note investment purchased for monthly payments “goes south”, and becomes an active participation investment, with plenty of additional capital required for legal fees, forced place insurance, and property taxes.  

Custom building a home is a slow and painful process.