Mortgage notes require due diligence on borrower history and property value.

My advice is to always always always do your own due diligence and be sure to check it 3 times!  

That level of diligence isn't possible with human effort or even traditional data processing techniques.I would like to expand to investors in the future but this technology is very new. got it also commerical Brokers I suspect would be a target for you.. 

If you have that, and do your due diligence, it's not going to matter.You seem scared to be a landlord before you even start so it's likely not for you.

But during the buyer’s due diligence, several unexpected issues surfaced, each cutting deeper into the profit I had worked years to earn.The first issue was with the water lines.

But – always do your own due diligence, even with the companies mentioned above.

You sound like the brave side of the coin in that you did due diligence and respected the process.  

As important as due diligence, analysis, knowledge of the property type, track record of the syndicator, correctly predicting economic trends, and timing is, the number 1 way to avoid a devastating loss is NEVER INVEST MORE THAN 10% OF YOUR INVESTABLE ASSETS IN ANY ONE DEAL.  

Just to be clear, I am not in anyones corner on this one, I recommend everyone always do their own due diligence as part of any deal.

Stay diligent!