(Caveat: some of our investors have some experience and would contribute in a consultative hands-off way)Candidly, we think the hard part of this development is over and now it is a matter of executing an already developed plan.

@Trevor Schuler consult an architect or structural engineer to evaluate the plans and structure to see what changes need to be made to bring the house up to code.

I'm looking for a primarily DIY project, so I'd be interested in finding a lead "consultant" for the project, who would provide expertise and any tools, while I'd provide the labor, materials, etc as well as compensate them for their time.

In my opinion, the easiest way would be to consult with a real estate agent who knows your market really well.

We'll consult with a real estate attorney about the trust.

In need of some advice, pending legal consultation with my attorney.I am a licensed real estate agent in Michigan, but do not practice as one.

As an Real Estate Investment Consultant, I assist NY & Calif. investors diversify their investment portfolio.

It might help you estimate costs.If you are looking for more info than that, there are some other sources like https://www.hausable.com/ (California specific) that offer ADU consulting services to answer these types of questions.

Goal is to get pro-forma ready by Friday and start capital commitments then.Anyone have a good contractor in mind or is a contractor that would be able to meet and do a consultation with me?

The internet is a great place to start for tax advice but when you get serious I'd highly recommend you not only consult a CPA, but one who specifically specializes in REI such as @Daniel Hyman