He deals with vendors and contractors.  

I have amassed a decent network of vendors, so definitely looking at fixer uppers.Eventually, I hope to grow my portfolio to acquire commercial loans for multifamily deals, I haven't started purchasing investment properties, only have my private residence.

They track management income, expenses, vendor payments, etc.

Sometimes vendors get short-sighted and need to be reminded to not be ridiculous. 

This association is the best thing you can do for yourself in the education, networking and vendor relationships

You're using a company to manage tenant phone calls/inquiries and then send in vendors for repairs.

With Appfolio you could select your preferred vendors. 

That being said, you could be the individual who helps identify this respective vendor.

They have vendors that count on their business as a large portion of their business.

We have more people than I can count doing behind the scenes work to make it all run, hundreds upon hundreds of people and vendors.