The reason for the LLC to me is to keep it's operations separate and distinct from my other businesses, for operational reasons.

The area is close to downtown Seattle, units are 600 sqare feet each and include a full separate bedroom, no short walls or anything like that which you find a lot of around here. 

I've purchased my property in my personal name, then transferred them to an LLC.An LLC provides you anonymity (if done right) and it separates your investment from your personal assets so you reduce risk of losing personal assets in a lawsuit.

@Weng L.I seen quite a few posts where investors who own regular duplexes want to go through the trouble and expense of separately the unit out, i.e. set up an HOA, have separate ID's set up etc.

If the numbers make sense, you could try renting it for $X plus utilities and then bill them separately each month for another $150 to cover the utilities which are part of the HOA.Reality is that is about $100K of mortgage.

That is, don't look at the MI as a separate "fee." 

I'd separate out the prepays/escrows, mandatory fees, and the actual costs of the loans.  

So what separates you from Warren Buffet?

Owners in the '80s added a second story with a separate staircase, a door connected the bottom unit to the top unit via the new staircase.

What if I pay him the “rent” separate from the LLC?