You and your wife are considering a move to be closer to her parents in Scottsdale.The largest source of liquidity for you is the equity in your home at 1M and you have a 4% mortgage and it will cashflow positive if you rent your home in Seattle.Your question is should your sell your house in Seattle or rent it. 

The unit shares the same heating and cooling as my own house.

Off grid sounds cool to some, but it really limits your potential guest pool.

BiggerPockets has some pro tools that let you see rent to price ratios and other cool stats, I use this to check out various markets and which seem to have better/worse profitability.

They're cool, but let me know if you have a hard time reaching them or want another option to consider. 

Easy Street is a good option BUT you need CASH in liquid checking/savings for down payment of 20% and BIG chunk 2-3 times loan amount to buy out of a prepayment penalty.

I'm sure a lot of hard work went into building it up and cool that you get to reap the rewards!

@Matt 'Roar' Gardner Cool, thanks again for the info!

The high end is the 20 or so co ops on 5th Avenue or Park Ave (one is on East End Avenue) that require liquid assets of $100 million + to gain board approval.  

If I get a permit cool.