For example, a doctor or software engineer, who makes good money, but does not understand real estate nor finance.

For our ADU (garage conversion), I am handling the design/engineering and then selecting a final contractor once its permitted and ready to go. 

He is an engineer and pretty risk averse.

I can search it but same deal, the search engines don't evaluate the results.

If one wants Precision, become an engineer.

I am an engineer who works out of his basement everyday and rarely is on the phone.

You may have to search a bit for the right contractor or engineer - sometimes I see one solution dominating in an area - "that is how we always do it" 

For the Houston Fourplex decks vs the Botanica Southpark renders - they are the same in terms of layout because they are the same programmatic model, which has been carefully value-engineered, and is being built in different markets in Texas.

The 1000 I talk to stand a chance-but they are typically NASA engineers or other post graduate level mathematics professionals and willing to lose in trading the first three years.

The engineers actually perform the technical work (and have to rely on you to publicize the benefits of engineering studies) so you represent the service to the public through educational forums.