check the local municipal code, most are online.

A tough thing we've found though (like you mentioned) is even the highly rated foundation folks in our area -- as well as a lot of the content online -- all have a strong incentive to sell big high-margin solutions.

You can find different strategies on how to find and reach these folks, such as driving for dollars, targeting mailing lists, networking with Realtors and other wholesalers, and having an online presence, plus paid social media ads, etc.

Check out the free content online of Bill Faeth. 

Even though I myself have a S8 rental, what you hear online is completely false.

Established on line presence5.

Though I appreciate the idea of finding online resources and studying them, I find that a curated, tried and true formula (if it works) is much more worth my time than spending time trying to find which resource works best and then spitballing the ideas until something sticks. 

That's what I've heard from others and read online as well.

Land Investing Online.

Every contact I needed for insurance, mortgage and cleaners were done online, mostly through connections from BP.