Acceptable practice when making cold calls

[Stacey Olson]

I posed this question in my last blog post...would love some feedback! THANK YOU!

My husband and I were out scouting for properties last week.  This is regarding one of the properties we came across:

One of the other properties appears to be a small part of a $1.5 million bulk auction buy. From what we can tell, the property has been boarded up since it was purchased in late 2013. My question: we have located the LLC named in the purchase. The LLC has two named manager-owners. One owner we can't find contact information for. The other is an optometrist in our area, and we were only able to locate a business contact number for him. Is it kosher to contact a place of business in this game? I know I'm still overly timid in my newness here. I'm willing to make the call, I just want a little reassurance that it's acceptable practice.