How to find small/private landlords?

I have a good income, rental history, credit etc... I don't want to rent from a large management company on principle and also I don't like how these modern luxury apartments look, modern architecture is not my thing. The largest I'm willing to go is Cornerstone, Boutique/Wheelhouse, etc. My experience just getting a tour of Cornerstone was insane and the latter doesn't have anything I want in my time frame.

Anyway, how do I find private landlords like just own a building or two? Do I just need to drive around and look for signs? Does anyone know anything? Ideally I'm looking in the Highlands/Arvada but neighborhood isn't a deal breaker for me.