Second, this kind of project won't appeal to a lot of doctors and execs, because it's resource intensive and outside their area(s) of expertise. Sure, they could acquire the property, and hire their own crews, but they could buy an already built home for less than the cost to build a new one. So you'll need to do something to add more value to this deal.
Third, if you're willing to consider something creative, then some investors (myself included) might be willing to work with you on this.
Good luck on selling.
"There is wisdom in an abundance of counselors", quote from Proverbs in the Bible.