What kind of COC returns do you like to see in Multi Family ( duplex- Quad)

[Kyle Donlea]

I am looking into a Duplex in the Minneapolis area and based on my max allowable offer my cash on cash return would be around 4.5%. 

What is your COC return goal for a Multi Family property?

[Nathan Gesner]

Quote from @Kyle Donlea:

I wouldn't invest in anything for less than 12% unless there were an appreciation factor at play.

Why bother with the stress of tenants only to get a return lower than you would get with a basic mutual fund?