We had to take down a tree 2 weeks ago-a very large oak that split in half from its own weight.

I was paying half of the rent in my friends apartment so there was no breach of contract and penalties to pay when I left.

From what you have said, I would be most worried about your offer to give them rent "for half price until the issue is solved".

I rent out half of my home and live in the other half, thus my cash flow is technically negative.

I've been an agent for about a year and a half.

I was In this same situation about half a year ago.

So half the time its a personal property and half the time its an investment property. 

. - If it's a partnership then that requires a lot more information if anyone's going to give any advice on what to do here.If they're only providing labor and GC (management), then half equity in the flip could be fair compensation.I need more info to give any kind of proper advice

For the deals Im looking at, the "easiest"  way to make them cash flow is value add. 

It would be a half decent argument if you had more equity and if you were in a rapidly appreciating market, but negative cashflowing properties are risky in the face of a downturn.The upside is that if you keep the rental for 15 years, you own it free and clear.