Partnering up with an investor (co-sign)...How to structure..

[Dakota Mivshek]

In need for some creative ideas/help in how to finance a new place...

Quick backstory... Recently bought a 350K condo in Portland, OR - currently living there. Interested in figuring out how I could buy an 800K house that has a 2bd detached ADU. However, I don't have the money for the down payment, but I have two friends/family that would.

Two part question....

1. How could I get approved for such a purchase (10-20% down)

2. What are my options to structure a partnership of sorts? Which I imagine would amount to co-signing. 

The down payment would have to come 100% from the 'investor'. As for property, I would plan on living in the main house (4 bds, 3 baths) and airbnb the 2bd detached adu. With roommates in the main house and the adu, I figure I could bring in 7K a month. 

Any advice would be great!