No recourse to my credit or business credit since I'm not listed on the original mortgage.  

We need a new bank account for business S-Corp.

His team is adding a course on buying businesses, and they are also working on adding Real Estate College Semesters and learning badges. 

He went to the state program but his house was above the maximum California would cover, so he was "naked" (no insurance) when his house burned down.If you are an insurance company hoping to stay in business in CA, but losing money, and are not allowed to raise your premiums, what would you do? 

My only reply here is to say to simply focus on the business objectives.

The best thing this community can do is encourage your son to run far away from a subject to deal.

Since the business likely has no credit history, you will need to use a personal guarantor to get approval, and your personal credit profile really counts.If it’s a startup, I recommend Chase and AMEX, especially if you or anyone PGing the account has clean personal credit, not a lot of inquiries (less than 5 in the past 24 months), and above 720 Fico 8.

If you have enough money but your business is the main driver of income in most cases you can make more money putting time into the business.You could also get creative here.

And I'm not saying this to earn your business just as if it was a residential property.

I second @Erik Estrada Chase offers great programs for business, multifamily, and conventional loans for commercial properties.