My question is: On new loans-how can we collect from each investor a small fee for our monthly services. 

Quote from @James Hampton: That's a bad practice to follow.If an occupant is not named on the lease, you may have difficulty enforcing rules or evicting them.

I'm trying to understand how they collect data so as to develop the best comping practices.

I guess to get a definite answer I'll have to cold call to get see if all these people are behind on their payment or it's just a standard practice behind some salesmen!

You'll spend more chasing them than you'll collect.

They can only collect the admin fee which is roughly $150/yr.  

If it's a verbal tenancy, you have to show a practice of collecting rent that the tenant is no longer abiding by (or perhaps tenant shows up, and honestly states they were obligated to pay rent and haven't done so).When the eviction case is submitted, you give the tenants names, e-mail, phone, address.

It’s standard practice and an essential safeguard for landlords.Trust your instincts and treat this as a non-negotiable policy.

Quote from @Alecia Loveless: @Jonathan Bombaci I think a good lawyer that has passed the bar to practice in two states is going to be more expensive than $200,000.

While I have a general understanding of what it takes to set up a fund, I’d love to tap into the collective wisdom here.