Hi, the 3 counties I invest in dont have a easy way to get a list of multiple family mailing adresses for. I checked listsource and they were not able to do it for me.

How do you guys go about compiling a mailing list of owners of 2-4 unit buildings in specific counties, I am happy to pay if someone can recommend a service provider. 

If you contact the municipality directly they might be able to provide you the information or tell you where to go to find it. They may charge you.