Bottom Line Up Front (BLUF): if I use a personal friend to loan me money to buy my first property, can I still use the “cash out” REFI technique with a bank in my BRRRR strategy?

They're not the greatest leads for wholesaling, but if you learn some of the other investment techniques (lease options, subject to etc.) you can do very well.

This is common - and there are several groups in B'ham that do it so it, so it is a tried and proven technique - however it's not realistic to expect to find $60k houses that you can buy for $900 and then sell it for $25k without rehabbing it. 

I am wondering what method can I use to pull this equity out of the home to purchase more homes through owner financing techniques. 

Lies to Watch Out ForThe brokerages have developed scripted techniques and tactics to build trust with owners.

To be successful at the technique you have to be pretty shrewed and willing to push the Caveat Emptor factor on your buyers, or you have to be very, very, very good at finding REAL legit good deals (this is not super common). 

Don't let your scepticism interfere with your opportunity to learn new methods, techniques, and strategies.

although they both are interdependent.The best way to understand costs is to get a Floor plan drawn and get quotes from at least 3 people in the area who have done ADU'sIt's always a good idea to involves a professional right from the start, especially someone who is experienced as they will suggest techniques that could bring value and save money in the long run.

I justified selling my house to buy two as using the stacking technique.

The technique is called a 1031 exchange or a like-kind exchange.