However if I do a BRRRR I can achieve infinite return by extracting all of my investment.

Recognize any negative position implies that the costs are trapped until appreciation provides the opportunity to extract any part of the ADU investment.  

I talk with him/her and ask them after they have written up the appraisal, and say... okay so you say based on the condition and comps this property is worth 100K what in your opinion will I need to do to this property to get it to (x amount) usually equal to current purchase price plus budget plus a minimum of 25% more..ie: purchase at 100K20K down payment80 K mortgageRenovation cost of 15K100 + 15 = 115 x 1.25 =  144KThis means I can now open up the back end of the mortgage product for the 144K and extract my full down payment and reno costs.

So as not to shill for him, I'll let you extract that info on your own.

Sharing photos extracted from my only video.

They are more concerned about (no particular order) cash flow over the entire hold period, appreciation, value adds, equity gain at purchase, exit strategies, tax consequences, etc.Simple truth is San Diego historically has produced outstanding cash flow over hold periods when equity has not been extracted. 

So then they had to make arrangements with us to allow them back in to retrieve the cats & the cops had to be on site for that extraction. 

I am seeking advice on what my best course of action is in extracting equity to invest in other properties.

If you can't extract yourself and cashflow then you're trapped. 

To extract your equity you will have to either do a heloc or a cash out refi.