Due on sale clauseI would like to hear people's opinions on this strategy if the risk/reward is worth it or to steer awayIn many, or perhaps most, economies, houses can be sold for 20% more than a sale where the buyer pays cash or qualifies for conventional financing by seller financing a buyer who does not otherwise qualify for a mortgage.  

If this is your primary residence you have more options than if this is a rental.

Other than having a quarter of the property (purchased for $850,000) qualify as my primary residence are there other benefits, tax or otherwise, are there of living in the property?

@Matt McCurdy If the majority of residents in the community prefer to rent, it may have more to say about the community than anything else.

Investment Info:Single-family residence buy & hold investment.

The majority of taxpayers are required to settle their tax dues by April 18 to avoid penalties and interest accruing on any outstanding amounts after this date.For those residing in Maine and Massachusetts, the deadline is extended to April 19 due to the Patriots' Day holiday in these states.How to Request an ExtensionIf you find yourself in need of an extension, the IRS provides convenient options to make the process smoother:File Form 4868:Utilize your tax professional, tax software, or the IRS Free File platform on IRS.gov to submit Form 4868.Individual taxpayers, regardless of income, can leverage Free File for an automatic extension request.Electronic Payment Method:Make an electronic payment using Direct Pay, Electronic Federal Tax Payment System, or debit/credit card or digital wallet.When selecting the payment type, indicate it's for an extension.

I have only owned one investment property (residence turned rental) which I sold at a great time, and now looking to get back into long-term SFH or multifamily investing more seriously to diversify my investments (I'm almost entirely in equities now). 

I cannot write off interest payments because I already have $10000 (cap) in interest that I am writing off as part of my primary residence.  

Lower-income residents bear the brunt, with vacancies for apartments under $1,100 dropping below 0.4%.

It's that there are far more qualified buyers since the crash as a result of the Frank Dodd Act.