Seems like they are running a Pawn Shop, homeowners in Austin/Miami/Tampa etc who need cash bad sell a "HomeShare", percentage of their equity in their home for a discount, with a term of 10 yrs, if the homes go up in value as they have since 2011/2012 then NADA gets the original equity already at a premium price plus any appreciation for the total percentage they bought from the homeowner, but since Austin now down 20% in last 12 months and other hot home markets may also continue to fall, and NADA does not engage in price discovery (ie shopping for best value) as they want to obtain a "Market Value - ETF like" of the cities they invest in.

Some folks will give up the premium lake front to save a few bucks.This data will give you a broader perspective on the market and help with the rates.

I'm not the biggest fan of insurance, but have to recognize they will pay premiums for their clients to stay in homes for 2-6 months as the insurance company gets the home back in order.

However, I also see it as an opportunity to potentially pass on risk (maintenance/upkeep/repairs) to an Airbnb host, assuming insurance coverages work out, and/or ask for a premium on top of what I listed the unit for.

Example: if I find a newly built 4 unit that sold 5 years ago, I would find similar 4 units projects (but older) which sold around 5 years ago  and compare their sale prices to estimate any premium for age.

Of course, they also offer an unparalleled warranty on the notes they sell, so that is probably worth a premium.

Traditionally insurance companies collected premiums and invested in the stock market or other vehicles to increase their income.

CPAs love clean books, and hate bookkeeping, so anyone you hire should be thinking in alignment with what your tax preparer will need at the end of the year (otherwise your tax preparer will charge you a premium for the extra work they have to do to decipher your financial statements).

Is the premium price worth it though? 

On a 6Br or higher you are easily going to be pushing $3k for rent, and probably a premium for anyone who agrees to arbitraging to you.