I would like to build a duplex on it for long term rental income.

I know it seems difficult to turn down the potential income from this lease, but be patient, renting season is just around the corner.

If you did not do a "wrap mortgage" or "mirror mortgage" to help them create "notes receivable income", they may need a cosigner to have enough income to qualify for their next mortgage.

For all methods you would want to find a market that has strong employment rates, strong income rates for the market, and is a growing or an established market. 

(I REALLY can’t stand state income taxes.  

I needed to find a passive real estate income stream that would work within the IRS’ self-directed IRA (SDIRA) rules.

The $51.56 interest to pay (see your previous post) is a monthly payment, not an annual payment.

It is disheartening to witness a mentorship program that boasts substantial financial success, with students allegedly earning substantial monthly incomes, yet fails to ensure that their own employees receive even the minimum wage they are entitled to.

Too many low income apartment buildings near by / vacant buildings. 

STR income: $130K/year.