The contractor suggested building a French drain along the fence line and finishing it off with a retainer wall to match the others the builder did.

What type of trouble am I in?

The problem I’m facing is that I’m having trouble just doing it.

If allowed by the city, grade gravel and fence it and then lease it as outdoor storage. 

Thanks Kevin, Thanks Peter..Good info, we are trying to get cheaper money by financing it ourselves and getting 1 partner in on the deal.15% do seem high, i can see myself running for the fences at 15%, but like you all said, every deal is different and we do have to find creative ways to play with the numbers.

If you are going to have trouble with sub to, it will from your insurance company, so I'd tread lightly for sure.

I’ve been having trouble trying to find any.

I had an AC unit stolen - thieves climbed a 7 foot fence on my Class C house (I didn't have security cameras on this house). 

In summary, I have only seen them be more trouble than they are worth currently.

Trouble starts when owners “live off” the entity, instead of taking a salary or owner draw.