Their charges for repairs have gone up the roof and they are not competitive at all.

Subtract more for AirBnB charges, local management, repairs, cleaning, etc and there is not a lot left to pay the mortgage. 

I am not seeking to charge each tenant, only seeking to remotely monitor each buildings water usage to identify costly waste/problems early as possible.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

Our Fourplex 100% ownership strategy has evolved over time, and based on feedback from William and others, we now charge a 20% down payment, instead of 30%.Secondly, we now pay the investor interest on the down payment, as a discount on the final price.

Hop on Airbnb and scan nearby properties of similar size to get a feel for what they offer at the price points charged.

In my area (near the beach) its mostly families and they want cabanas, baby items, chairs, coolers etc that we do not provide but I have a local vendor that delivers and picks up these items and charges a few dollars per day for each item, and give me a 20% referral. 

He charges 5k for info you can get from any realtor who is familiar with Section 8 housing or on Google.  

A solid buyer-agent agreement will outline what they charge and their intent to negotiate as much of their fee as possible from the seller.

I think the charge is fairly nominal from what I have seen.