It's straight up math & technology.

They successful cut taxes and loosened IRS enforcement. 

Whistle-blowers can sometimes claim a cut of what a company disgorges if they provide information used in a successful SEC investigation.His report about RAD to the SEC is among 11 complaints he has filed with the agency.

I'll save you the details but...Per door cost: $63,300All in Cost: 700kTotal Revenue: 137k(ish) annuallyNOI: 65-73% (in the expenses we included: insurance, taxes, $75/month per door repair expense, management fee 8%, grass cutting, & a misc fund for random crap business license, etc.)Now...

Save $$$, get creative on a rehab to cut the budget, look for cheaper RE, or leverage PM.

Rather than flip houses I'm going straight to building a new home from the ground up.

I don’t want to just cut cost though I want to understand what I’m doing and be super hands on.

All of that is pretty cut and dry. 

Some have done owner financing with an agreement to pay all interest and equity splits when the home sells others have done it where they do a quitclaim adding their name onto title with the seller so once rehab is done the seller can't try and cut you out of the deal. 

I realize I am not cut out for the entire REI process of consistently finding multiple properties for particular exit strategies.