I am going to be the contrarian on this subject.. 1. the pre license course is valuable as it teach's the vocabulary of real estate and the basic laws of your state.. its dirt cheap and one of the better ways to build your foundation. 2.

This is anecdotal, but I come across of ton of GCs looking for spec-build financing in local meetups and networking groups, such as on facebook on in person meetups. 

Congratulations on building a solid foundation with your duplex and single-family properties!

A downtown commercial building for $525k that could be your new office. 

How many new builds have you completed in the last xyz years?

Go to BUILD YOUR TEAM at the top of the screen and look for local investors or meetups in your area.

@Jacques CaspiTo succeed in real estate investing, I’ve found it’s crucial to budget for unexpected expenses, focus on thorough tenant screening, and build strong relationships with contractors.

Then to build your teamBut most of all for my advice, I'd be looking at Milwaukee 1000% before Chicago!

To discuss other side of this thought process on new builds..

But, once you do build some wealth and have a high income, you realize how much you can save/make by owning the right real estate - numbers that far exceed any cash flow you might make on a property.