If the fees reward the purchase of more and bigger properties disproportionately, I'm wary and likely out - depending on, or in conjunction with the next point...- What are you investing in the deal? 

Speaking from private/hard money terms, the loan would most likely be considered a delayed purchase if less than ~5 months depending on the lender, and no financing was used on the original purchase.

Much depends on the experience of the person your lending to.

Every private lender will have different costs associated with getting the loan, which can depend on factors such as LTV, FICO, property type, etc.Private money lenders are almost always more costly compared to a traditional bank because there's much less paperwork/due diligence involved.

Alternatively you could possibly look into an SBA loan if you plan to owner occupy one of the properties (depending on your current role and whether its W2 or etc.) 

A lot depends on the experience of the operator.

This is a private contract between you and them, so what they will or won't share is all legal...and just depends on what your agreements say.

@Philip Johnson I use a general contractor and or handyman depending on scope of work on any new purchase property.

It really depends on how you define them.

It depends on the type of loan, loan to value, fico, income, debt, and experience.