I remember seeing this method in many popular books and podcasts.However, the STR world has changed so much ever since with its exponential market growth.

There is no 'per square foot' method that is accurate....At least until you have quite done a few.... 

There simply won't be any widespread adoption of Bitcoin as a replacement for fiat currency until the volatility declines to that approaching fiat currencies.  

If LL uses accrual method, they can book revenue without receiving.  

The straightforward method is to do everything yourself, as in my example above.

How come data driven method did not see that construction costs will only rise?

Sorry for the questions just curious about your method since it seems different than most.  

Ultimately, these challenges culminated in widespread layoffs at FlipOS, which forced me into involuntary cancel contracts for properties originally earmarked for sale to them.

Now let's look at Quality based on grade of wood.There are primarily two different terminologies and methods to grade Quality. 

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.