And give them some incentive to do this, such as a break on their outstanding balance, lower payments, lower interest, reduce their arrearage or combination thereof.   

So, you need to be paying extra on your two loans so the outstanding balance on your loans is always below the outstanding balance on the buyer's loan. 

Outside of that look for any outstanding violations against the property, are there squatters/tenants onsite, etc.

Note to people buying properties at tax sale, the amount that is owed will included the outstanding property taxes plus interest and penalties.

Lower income can't afford to move often nor can they move if they have an outstanding balance with a utility company or the landlord.

Think you're confusing a local downturn with some massive nationwide collapse (re: 2008). 

Have preliminary conversations with them to see what their requirements are as well as the terms of their product (i.e. draw period, floating interest rate as it relates to prime, repayment schedule, annual fee, and closing costs) before you start forking over all kinds of financial documents.3) Most banks will go with 80-90% LTV, which means they will take that percentage of the appraised value and subtract it from your outstanding mortgage to determine the credit line.

Most of the metropolitan markets nationwide are overvalued, according to latest CoreLogic report.

I suppose they could be worth it if they are outstanding at their job and make/save you more money than they cost you.

i didn't say always I have done biz in over 20/states and the lenders work in all states they are nationwide.