You can save 10-12 percent right there.

Why are they selling if it's achieving one-percent rule? 

How it typically works, you would have to come up with 20 percent.

Budgeting: Many landlords use the 50 percent rule, which means that 50 percent of your rental income should go to covering fixed and variable expenses, other than the mortgage.4.

A PM of worth at let's say yr7, has done hundred upon hundreds of listings, and dealt with a range of properties and tenant situations most transactional agents will never experience in their entire life time.

Your zoning should be ok, but you want to do everything by the book (which can be costly) to percent future insurance claims or injury claims in an unpermitted basement living space. 

I would say 90 percent of all homes in the outer banks are in a str program of some sort.

The money wasn't secured by a beat up investment property that could go south, it was secured by his personal home that had gone up in value a zillion percent since purchase.

Does BNB Calc show the lifetime of the properties revenue or is it an estimate of what it could make or is it showing the last 12 months of revenue?

Facebook groups have useful information, but tend to be about 75 percent spam or sham so you have to be careful in there.