->PropMgmtLLC - separate traditional single member LLC member managed by me, has its own EIN and bank account, has a contract with Cell1, Cell2 and handles all aspects of property management for property1 and proerty2, sends monthly invoice to Cell1, Cell2 and charges a $50/month management fee for each property.

I'm sure this process varies by state, city etc. but figured I would take a crack at the forums to see what I could learn.I've found a SFH in the Myrtle Beach, SC area that has a "mother-in law" suite that has been built with a separate entrance, separate electric meter etc.

I recommend separating your business from your personal life as much as possible.  

For an S or C, this is a completely separate analysis.Given that every LLC has a state fee, there would be an item of deduction. 

However, in your case, you have two individuals doing two separate 1031 Exchanges. 

I am a single female who is just about to separate from the military. 

The apartment buildings will be in a separate entity.

Without an 'out' clause it's very, very hard to get through to an amicable separation if things turn to sour grapes.

My intention is to provide my family with appreciating assets in a separate asset class than I currently have in my portfolio, and stable passive income allowing more time with my family. 

For some type of clean up and repair of broken plumbing or similar when it is somewhat unknown what the scope of repair is, then by the hour.As far as invoicing, an accurate description of the repair and a separation of materials and labor costs would probably meet most people's expectations.