(GAK!).   

I agree I need to figure out my own strengths/weaknesses and focus on them...That being said I've closed a few win-win situs in the past but  most my deals are on the MLS at least for residential.

The data drive approaches are: 1) compare the situs address to the mailing address at the tax assessors office.

No situs address, owner or owner's address. 

Economic aspects are scarcity, modification or improvements, permanence of investment or fixity and area preference or "situs" which may include intrinsic values or satisfies other needs.Real estate is unique, drop back to your Economics 101 class, "factors of production" in economics are land, labor, capital and entrepreneurship. land is the only factor that can not be replaced as a factor or requirement to produce goods or services, all other factors may be substituted, if you have less capital, more labor may be used to obtain the desired outcome. 

You could make your own OO list - get the data from the county and compare the situs address vs the owner/taxpayer address field.The brokers charge a lot for data, so much so that it's really not an option for beginning investors. 

Nik Gak is a lender who mainly does the NYC area, but will delve into other markets if the investment is a good one. 

If you want a fixed 15-30yr low interest conventional loan most lenders will require a foundation and as @Jeffrey H.has stated it must not have been moved from its original situs unless it is coming directly from the factory or a dealers lot. 

so the people losing them are bombarded with letters much more so than normal non situs type letters.

But my understanding as a layman is that Nevada has charging order as sole legal remedy, so if you are attacked personally, and if there is no veil piercing or fraudulent action on your part, the asset of your Nevada LLC should be protected from you.However, if your property is in Florida, you will not be able to act in court as your Nevada LLC has no situs in Florida.