@Richard Hoyte you mean you are doubting that "tik toky" video you saw where you just sit back and collect mailbox money? 

We talk about and discuss different types of collectables. 

I would just use online free tools for application, screening and rent collection.

It is common to offer above asking price to sweeten the pot as many owners would simply rather collect the cash upfront.What makes it a desirable offer structure?

It is not typical for owners to collect their gross funds and receive a bill for your fees.

To get the cash for down payments I am going to do a mortgage wrap on the low down payment purchases and collect a larger down payment from wrap buyer. 

Collect a refundable pet deposit.

Hence if something like this happens and you collect the security deposit, you have that paperwork to fall back on if it goes to court. 

If you want to collect a commission you need to be licensed with FINRA.Capital Raising: Understanding Commissions, Referral Fees, and Finders Fees | American Association of Private Lenders (aaplonline.com)

It’s a bit more advanced and can be tailored for medium-term rental strategies.RentRedi: This property management software includes features for rental price analysis, tenant screening, and rent collection.