Crack LLC Ownership - Looking for recommendations

[Nettles Mason]

Building the framework to update ownership and relationships between all court cases, taxes and property data have been solved and made real time for property owners. Our clients have great success prospecting to evictions and want to add companies that have court problems and own less than 10 properties.

We are at the point of development where we are collecting company owner names for our data base project. Our clients are in 6 counties in different states or about 2.5 million properties.

I can filter companies by total assessed property value or number of properties owned to reduce the number of searches.

SOS state website seems to be the simplest method but was going to ask what other data source the techies have found that provide property ownership details?