You forgot one more thing, you're arranging the sale of real estate in expectation of a fee probably without a real estate license. 

Depreciation is typically allocated according to the ownership percentages outlined in the partnership or syndication agreement, which are set in advance and follow certain rules under the tax code.However, some syndication structures can be designed with different classes of partners or special allocations, but these arrangements are subject to complex tax rules, such as the "substantial economic effect" rule under Section 704(b) of the Internal Revenue Code.

However, with an arrangement like that, you should talk to an attorney. 

We arrange these in unlimited ways - everything from ADU's, SFHs, and apartment complexes.

While most banks don't offer this, I can arrange investment property HELOCs in PA, NY, OH, FL, and GA.

While it's not common for lenders to enforce this, it's still a risk.Lender Discomfort: Since the loan stays in the seller's name, if the lender becomes aware of the transfer, they may become uncomfortable with the arrangement, potentially complicating the process.Seller Risk: The seller is still legally responsible for the mortgage.

The first week they sent me a few properties on the MLS but since then it has just been me sending them properties I'd like to see and them arranging the showings.

Are there any other considerations to ensure appropriate liability protection in this arrangement? 

** If you’ve engaged in rent-to-own or lease option transactions, what tips do you have for making sure it’s a beneficial arrangement?

We ALWAYS require a full month of rent for SD, but we also lose a decent amount of S8 applicants who can't come up with it.3) Delayed Advertising for Vacancies:- It is VERY difficult to arrange showings on occupied rentals, especially if Class C or S8 tenants!