I now want to look into "flipping" new construction or spec home building.

@Jonathan Baptiste It is too difficult to bill back people with rent by room style of house hacking, you will be unable to make it "fair" for everyone since some people take more showers than others, some people cook more than others, so how would you bill back those renters, or if one renter is gone for two weeks visiting family?  

Some companies are very difficult to contact.

Because it's not difficult for me to separate.

Looking into single family houses or multifamily, as there is an actual land that you own and potentially build ADU/DADU in the foreseeable future.

That's the challenge but it's also the opportunity because it is difficult to analyze. 

@Rob Blumenstein I would talk with @Prashanth Mahakali who is an architect but also been doing new builds the last 4 years himself. 

Since the first position buyer was a neighbor and my client's offer was financed, it was difficult to compete, but there are some steps buyers and their brokers can take to outwork cash and other offers. - Position.

The door in question is the front door which is the only entrance to the building for all the tenants.  

If you're the kind of person that needs hard math and graphing to understand things, this is completely the book you need on building wealth through duplex living.If your wife is behind you in this idea, and can see it as a move to financial independence, congratulations, you're in the small minority, as I am.