@Jena VailThat is how we prefer to sell owner financed is the 10/10/10 rule(10% down 10% interest for 10 years)We have modified this in instances for larger or smaller down payments or changed amortization but had a ballon

I have two friends who own modular construction companies.

Personal preference, to me a lot of these asset protection schemes are like wearing a covid mask when driving alone. 

then you really don't have a problem...except that you are forced to switch horses in mid-stream which I know is not desirable....A new GC will not always charge so much more to take over a job mid-stream, it just depends on a lot of things (like the original GCs reputation).I would get a release (of sorts) stating that the original GC will warranty the work that he has completed and that the new GC is not liable for any work not performed by his company.

I am also getting leads where the person is saying they prefer to pay by card. 

Dive into market research for your preferred location.

Are they a good company to work with? 

I awoke to a phone call from the dumpster company that this investor informed them as they were moving the dumpster to where I wanted it that it couldn’t be there and he arbitrarily picked another location for it.

This is causing absolute chaos for me now with my insurance company. 

I prefer value-add deals, as I have a background in construction.