@Matt R.

that was not a method that Armando taught in the seminars I attended these were strickly how to find BRRR props and rehab them and then resell or refi and keep.. the Markets we worked were Vegas and Orlando and Frankly those investors who actually bought property doubled their money or more with the deals i funded for them and they bought on their own it was 2011 to 2013 which as we know was a prime buying time and had to hand it to Armando he picked two of the best Markets.. 

Figure out a method and process to pay as much as you can while making a good profit for your efforts and risk.

If you're looking for a great way to find off-market properties with less competition is by using a method called Driving for Dollars.

They’re fully renovated and rented to U of R and RIT college students and grad students.  

What tools or processes have you implemented to estimate rehab costs more accurately and avoid scope creep in BRRRR projects?

@Marcus R.

You can sell on financial method because there is such short demand there is all but no comp's to use for comp method, and if selling as turn-key, yup, financial method will be your friend for sure. 

Obviously if you’ve done this before you likely have a method you prefer for dealing with these types of things.

Lots of methods and resources.