and it hurts my head to even think of the right way to structure such a deal to remain in compliance with a dozen different regulatory laws.  

To form such structure correctly, I need to consult/hire a CPA or an attorney.

I was looking at a development investment in a mining town in Western Australia (WA) (structured and managed by a 3rd pty) but held off last year as job security was somewhat uncertain and had a little one (now arrived) on the way.  

Is this possible with this sort of business structure?

.______________________________________________ The upfront agreementIn order for the upfront agreement to work, you need to frame it as a very fair, 2 way business agreement.Here is a possible exchange…After the walk through, you’re sitting at the kitchen table, looking at both mom and dad the sellers.I fold my hands and I looked very solemn, I try to give them is kind of an expression is possible, as sincere as possible, I have my legal pad, a pen, and a blank letter of intent in front of me.I also have a folder of comps and rental information on the subject property.So here’s the upfront agreement…Investor: “So Bob and Susan thanks for the walk through, I just wanted to talk about how I’d like to see our business relationship work.My job is to look at the property, look at all the financial information, then make a decision, on the spot.To keep coming back over and over thinking about possible deals is not what I do.What I do isif the location is right,the condition of the property is right,the layout of the property is right,the existing financing payments are right, andthe attitude of the sellers are right,then my job is to put together the deal structure that works for me,and I basically give the project the green light.Not a yellow light or a red light, but green light,the analogy here is that we go forward and get the paperwork done tonight.To keep coming back is not a good business plan, takes up too much time and nothing gets done.

We need a structural engineer and someone to help us with the design layout of the new kitchen, laundry room, half-bath,and living space and the layout of the Master bedroom and master bath.we are in Greensboro North Carolina so we would like someone local.with an architect be the best person for the interior changes?

How would an experienced investor structure an owner finance deal here? 

I've estimated the rehab for more moderate priced homes but I suspect a luxury home is going to have a dynamically different rehab cost structure, and as I've stated I'm curious to know if there is a way to estimate a prototypical rehab number for a luxury home.To your continued success!

How can we structure the deal in a way that we can do the repairs ourselves without the risk of either party losing out in case the deal falls through?

These buildings are block structure, each with their own bathroom, no furnished heat or AC but some tenants have added it themselves.