These may be a better option as they are built for real estate so they are less generic than your traditional project management software like Monday.com 

I was thought to use a letter of intent letter to obtain the house.Is this all you have to do and that bypasses the purchase agreement or do you need both?

I have been running some hypothetical use cases and been comparing the returns with more traditional investment assets, and there must be something that I'm doing wrong because it doesn't add up for me.Scenario 1 - 9.5% Yield vs Stock at 6%: 5 year 12k note with 9.5% Yield, this means 60 payments of 252.02 for an end valance of $15,121.2 which gives me an annualized return of 4.73%.

In this arrangement, instead of obtaining a traditional mortgage from a bank, you negotiate directly with the seller to finance the purchase of their property.

But on the other hand, once the money was paid back I wasn't paying interest on it and I could redraw (unlike a traditional mortgage).

Since you have experience with renovations, perhaps offering handyman services or consulting for other property owners could provide some extra cash flow without tying you to a traditional 9-to-5 job.Dealing with discouragement is tough, especially when it feels like the world is against you.

Those real estate agents ONLY work with traditional lenders is why they say that.

Despite the project’s unique nature and impressive traction, securing traditional financing has proven challenging.

Any Pro's or con's compared to the traditional way of building? 

They're sort of leading the charge in this new direction, and I think we might see the traditional dealership model and its commission structure start to fade away.Of course, this change won't happen without a response.