Anyone have experience with Build To Rent (B2R)?

[Andrew Rushing]

I am curious if any one has experience or opinions with Build To Rent? I searched the forum already, most recent posts are 4 years or older, so thought I would make another!  I recently came across the idea after finding some lots for very cheap in my area, and found this video which also made it sound very appealing! 

Developers make money on top of what they pay builders, If I were to hire a builder directly you would think I would retain the "sweat equity" that normally the developer would take on top right? Maybe making it possible to refinance later and pull some of my initial capital out? Or am I missing something? 

Thanks for the insight!!