Create a Property Management LLC?

[Dave Holman]

I co-own and manage two single family homes in Maine and am buying a multi-unit in 2017 and more down the line. All are in separate LLCs with different investor equity compositions. Should I start a separate property management LLC that buys everything, pays all expenses, contractors etc. and then bills the LLCs OR should I just keep track of each property's expenses? Pros, cons?