You can find qualified buyers that are small business owners, tradesmen, etc just have someone qualified to do prop underwriting be fore you sign the agreement. 

I wouldn't have brought a plumber out for a smell like this without tenant's agreement to pay if nothing was wrong. 

So I'd need to figure out an agreement/return between A and B, and then I'd need to figure out an agreement/return between (A&B) and C.

A syndication was way overkill because there were only 5 capital partners so they customized an operating agreement with their attorney that outlined roles and responsibilities, distributions, membership interests, etc.And you don't have to have all this stuff figured out right now; it's very customary for us to assign the contract to whatever customized entity we end up forming.Just one caveat. 

We drafted a short-term “use agreement” giving her a couple of months to find a new spot for her outdoor furniture and tools.

If they have an legally binding agreement, you need to honor that agreement and pay the fee.If you failed to mention to the agent that they are going to get paid, and then explained how, of course they won't present the offer.

If they have a lease agreement for more than 30 days, you have to follow the eviction process. 

JD made some solid points on structuring the agreement etc. 

Just ensure the agreement is clear and formalized.Pooling reserves across properties might make sense if you’re confident in your cash flow and other contingencies.

Did they give you an agreement or contract that you signed?