Help! How do I write a proposal for potential investors?

[Garvey Daniels]

I have an opportunity to purchase a piece of land next to my in-laws. I want to purchase the land and build a two story single family that could be converted into a two unit at a later date. Plus, we want to put a granny flat in the back. I am having an architect draw up plans and have been speaking with contractors. Unfortunately, we don't have the kind of money it will take to see it through. I have two potential investors that are highly interested, but want to see a proposal first and understand how we plan to make them money and pay them back. Since this is my first time doing anything remotely like this (thank you Bigger Pockets for motivating to bite off way more than I can chew!), I could use some assistance in understanding how to write a proposal and what info I need to include. Any insight and assistance is greatly appreciated.