My gut tells me they are pushing the revenue and basing the homes value on that.

Each option has different implications, so choose based on your financial goals.

I never go off of a flat percentage on anything, I analyze the costs to get to a specific return I target and analyze the risk that is involved. 70% may be an initial metric to see if it is even worth pursuing, but every deal should be evaluated independently based on costs, time and risk involved.

My question is, If one is to be strictly commission based, Is finding a broker with mortgage industry similar to finding a broker with real estate?

So it became a long-term action of repeating that cycle to achieve decent LT tenancy base. 

Mostly people with minimal RE experience are adding a single ADU and they often make that choice based on cash flow without taking into account the negative equity position.  

It's a very local question based on the comps and active/recently sold inventory inside the community.

I'm not a fan of leaving any alcohol at the Airbnb. 

A lawyer might be able to answer this better, but most rentals fall under fair housing laws (there are exceptions) and that protects against discrimination based on familial status which means children or someone who is pregnant.

.: I am trying to learn and understand... someone told me that its not just size of the home or level of the flip that determines profit, and that in some markets, what is considered a typical profit is 300k based on the 70% ARV formula.