I have heard you have to own land with all permits and engineering completed before closing on the construction loan exclusively in California. 

There are several myths that we have to debunk before someone truly believes they can do it.You need millions of dollars to do a dealThat it’s too complicated to figure outThat permitting takes yearsIn those communities developments cost way less (think a couple hundred thousand along with a loan from a regional bank), permitting is not difficult (much less red tape), and the towns are small enough that both the city staff and the local architects and engineers and contractors all work with you to help you navigate the process since you’re all invested in making your community better.Note: The big boys can play in the primary & secondary markets.

Is there a point of contact person/business that handles all home investor concerns (general contractor, engineer, etc.)

For the foundation I would bring an engineer out first before bids.

I’m mainly focused on the ATL/GA region but am open to exploring other cities too.A little about why I'm here: I’m an engineer by day and a real estate enthusiast by night.

Since we used small investor capital to buy and sell loans, we had some investors that were softward engineers.

Look for warning signs like wall cracks, misaligned doors, or uneven floors, and always get an inspection from a structural engineer (not just a foundation repair company).

Quote from @Blake Winiecki: Figure out how much you want/need to earn, then reverse engineer it to see what options are available. 

An engineering backed modeling study would be good for smaller residential properties.

Now to be fair the company we are funding is a Civil engineering firm with deep experience..