How Much Should I Offer For Private Money ROI?

[Dawn Oree]

I found the rehab funding and the property, now I need an investor to come in with the purchase money. It's a small amount (less than $30K). Since it's my hometown of Detroit, I know which neighborhoods are good for rentals and which are better for buy and holds, and what areas to avoid. How much is an acceptable percentage for a ROI in 6 months on private money? I was thinking about 10%-15%, but in some instances that seems so low in my mind. What's most commonly expected by a money partner?