How should I value an investors investment?

[Justin Hroch]

I am closing on a plot of land that has two existing structures and the ability to subdivide the remaining land into two additional lots. Our plan is to BRRRR the existing structures. With the additional lots, we would like to build a duplex on each.

We are purchasing it with hard money 90/10 on the purchase with 100% in rehab for the existing structures. Generally, my partner and I bring in GAP investors who have an equitable interest in the profits once we sell the property. Since our intention is to buy and hold these, but will still need the GAP investors to close the deal, I am wonder what are creative ways to structure the investment and what percent equity would you give an investor in a long term buy and hold property?

Open to any resources you would recommend as well!