More weight is put on the borrower say 80% with a weaker NNN tenant than a national investment grade one.

And most contractors, even the best ones, start to lose some steam at the tail end of the project (especially if you have already nearly paid them in full).Your best course of action is to do what you can to maintain a friendly and cordial relationship with the contractor.

And when they’re uncovered the attendant publicity is huge, IF the resultant loses are large enough.  

Are you looking to very possibility to lose it all?

If you're going to lose sleep from not being able to see your properties, you may want to pursue other paths.

I've seen many REI have a ton of equity, but can't pay their bills, and lose a lot of it, or even go bankrupt. 

This is getting out of hand and many of us could stand to lose a lot of money here.

Until robots can actually go to the property, go inside and see it, touch it, smell it etc. there will be risk of estimates being way off and losing money as an investor if you rely on an app.

You don't want to lose your rate on the house you are living in now unless you want to sell it so since that is an owner-occupied, you need to stay there and save up the 20 percent for the second property based on what you said.

Quote from @Brandon Morgan: If you screw up a deal with a friend or relative, you will lose money and the relationship.