Scaling and systemizing real estate investing

[Vladut Bujoreanu]

For those of you that were able to scale… to say 25+ units or whatever you considered large:

What are some of the things you wish you knew prior to you significantly scaling more? What are some things you would have done differently? What have been some major factors or variables that allowed you to scale to a large number? If you could provide a timeline of at what points you made some of those changes that would be helpful too. (As in, at 4 I hired PM for all units, at 12 I started my own PM, at 30 I 1031'd all of my residential into a single commercial)