The agreement is to leave the key in the house and let the landlord know.

I am a little bit concerned about any type of vacancy that lasts too long. 

If we leave Seattle our house should rent anywhere between $1600 to $2000 a month and we pay $800 for the mortgage. 

Stop being concerned with the stratagy, just make offers.

So as long as I'm maintaining a vacancy rate of less than 5% (at $700/month/unit I think that will be easy), I can't imagine that there will be any concern for defaulting on the loan.

My bigger concern is that the tenant has a regular guest who isn’t on the lease.

Barely cash flowed.Class C-D tenants are hard to manage, slow pay, pot smokers, trash, it's always something2018 back to full occupancy, almost, at the end of May, now for the end of June, 5 open unitsDid I mention tenants can't hit the dumpsterAnd when they leave they fill the dumpsters with you name it. 

I borrowed 100K from another free and clear property, and took a 30K 1st from a private lender leaving me out of pocket under 6K.

Assuming you have no pressing liquidity concerns and have a stable household income, I would prefer to buy houses in middle-to-upper middle parts of the metroplex.

Now, after typing this out, I've come to another option...leave the boiler in place, add in the electric heat capability/metering, and just keep the boiler chugging along at ~50 degrees year-round to ensure the structure is always "thawed".