HelloOregon leads the nation in lumber production and in developing a mass timber industry - more info on mass timber in Oregon here https://oregonforests.org/mass...Are others seeing growing in interest prefab and in "impact" investing in real estate?

Doubtful they will do your loan in the way you described.FoAC has a nice product for that, but you have absolutely got to have a good rep that will shepherd the loan through their process. 

Almost 4 years ago I've transition from years of producing and working in video production to rehabbing and developing real estate. 

Hello Ally, I highly reccomend working with an agent at Marcus & Millichap, they have excluive listings across all 50 states and canada in all commercial real estate product types: Multifamily, Self-Storage, Industrial, Triple Net Retail, Mobile Home Parks.

Most if not all brokers will come in .25-.75% lower on comparable products.

Are there non-recourse loan products available?

Most lenders have two loan products which will be needed to accomplish the BRRRR method.

The successful wholesalers I know either (1) spend $75,000 or more annually on marketing or (2) wholesale as a by product of a fix n flip operation, like Homevestors.

@Joshua Gwaltney apply for fix and flip financing, which includes purchase and reno costs, then refi into a 30 yr product once the property is stabilized and owned for 6 months.

These guys are often more familiar with day to day product instead of high-end/spec homes, and good property management companies will cull a list of responsive, reliable, and affordable contractors that are licensed (if required) and insured.