The wife and I are in the middle of building an 800sqft detached 2BR 1 bath ADU in our backyard near St.Augustine in downtown Raleigh and was curious what you find they return in equity.

And I seriously doubt any non profits are money laundering, but then again neither is Joe the Barber LLC or Betty's Property Management LLC (which, especially if they are Single Member LLC's--which flow to the 1040 without any tax return for the entity--are already identified to the government computers at the IRS.If you want to swim with the big fish you have to get wet.Maybe the resident agents will offer to fill this out as a service for $50 to $100 (???)

WE have done quite a few of those over the years with some pretty spectacular returns..

Most people are refinancing a BRRR because they are in short term debt (like 12 month hard money used for purchase +rehab financing) or own the property free and clear (they bought all cash) and would get a higher return on equity by leveraging the property and reinvesting the cash out proceeds of the loan to scale the portfolio. 

My goal is to stabilize, refinance within 3-5 years, and offer strong returns to lenders.Your point about targeting SDIRA investors and high earners is interesting—how do you typically find and connect with these types of lenders?

But, they will be in challenging parts of town where realistically you do not want to own property and your long-run returns will under-perform.I'd encourage you to find a balance of sub-market growth, nearby employment, strong income, and only then a good rent-to-value ratio. 

And the values like all rentals will just track the rental rates and what an investor is willing to pay for a return.

Brandon Turner's Rental Property Investing book is an excellent primer to understanding the happy path for purchasing a property - however in this market it really comes down to having bulletproof assumptions on rents/taxes/R&M/etc. as with rates as high as they are/inventory as low as it is, there is less cushion in your returns if you analyze properties with bad assumptions.

I am interested in an investment where I would provide capital to ATM company for a return.

My cost basis for my properties are consistently off from my tax returns because Stessa will include everything in the basis even though it shouldn't be.